Re: All very well....
Cookery - always a need for this. And I'm not being sexist, I wanted to do cookery at school but got laughed at as it was considered a "girly" thing. So I taught myself some of the basics. I'm not much of a cook but I aspire to more than "pierce lid and heat at 800W for 3 minutes". Plus, everybody should be taught the basics, if only for safety reasons. You could have beef like the Europeans (still with a heartbeat), but try pork or chicken like that and you run the risk of a rather unpleasant visit to the hospital. Plus, you'll die fairly young and in pain if your life's cuisine is nothing but ready meals and McWhatever. There's a plethora of vegetables, meats, and styles of cooking - try some.
physical education - at my school we just called this "games" as there's no education behind running around in the pouring rain in the middle of winter wearing shorts and a t-shirt. That said, we weren't lardasses, so at least the physical part had a purpose, back then and now. Maybe more so now as consoles were kind of crappy and the internet didn't exist so we had less excuse to sit around all the time.
religious education - depends on the mindset of the person teaching it. I believe RE should introduce the major religions, the differences and reasons, and throw in one or two of the lesser known (eg Shinto) as well for alternative viewpoint. The stress here being that people do have different ideas, no there is no "right" or "wrong" (though obviously the believers will tell you that their way is the right way) and most importantly of all - tolerance. Just because somebody calls their God by a different name, doesn't mean it isn't your God in drag... Unfortunately my 1st form senior (I was 12, whatever nth grade that is these days) RE teacher was a Born Again Christian. Those incoherent rants are what started me seriously examining the bible and made me the agnostic that I am today. ;)
"textiles" - is this what we'd call "sewing class"? It's a useful skill to have, the ability to make things. When the zombie apocalypse arrives (or the civil war following the outcome of a "No" vote on Europe and Great Britain splitting into a bunch of not-so-united parts), you might need to mend your own clothes, not go buy something from Tesco.
PSHE - I had to look this one up. It's sad that children appear to need to have a lesson instructing them how to interact socially with each other and look after themselves. This just seems like a bloody HUGE parenting FAIL.
"citizenship" - This probably depends upon the country. I know citizenship, pledging allegiance, etc is a Big Deal in America. I don't recall ever doing that sort of thing once in an English school.
Music - while there is, as you say, benefit in teaching the interested and capable, you run into the problem of how do you know without risking elitism. Sure, the kid who fiddled around with the household piano from an early age may well have aptitude; but not everybody grows up with musical instruments around the place. And then take me as an example. I enjoy music. I listen to a lot of songs I don't really understand the words to because I like how they sound. I now know that one of the reasons that I like a lot of Japanese contemporary music is because the bass and melody are running at different beats (such as 6 beats to a bar for the bass, and traditional 4:4 for the melody (try "Dear You - Feel" for an example, it ought to be on YouTube somewhere) - I believe this turns up a lot in jazz, though I'm not really familiar with much). I like understanding the technical aspects. Not just "this sounds nice", but why. Why does one chord sound like somebody died, but moving just one note suddenly makes it sound happy? I have bugger all talent and I'm still playing Fur Elise on my Yamaha keyboard and screwing it up. I will probably die before I get that right. Does this mean I should be denied any sort of education in "music" because I am not going to grow up and join an orchestra and make it my life's vocation? You don't have to be good to appreciate it, just...interested.
and all Languages - The problem with English speaking countries is all too often they seem to think that everybody can just speak English, and trot out the same "it's the most spoken language" mantra (I am happy to be corrected, but I believe English is third, behind Mandarin and Spanish; though English is perhaps the most widespread). But actually the reason for this is not just to make you more able to get on in other countries, it is also because by learning a language (properly) you will also be learning about the culture that surrounds the language, the way the speakers think. There is a long philosophical discussion regarding how people perceive the world when they may be limited or enhanced by their language. Get to know another language, even if non-proficiently, you'll get a taste of the sort of people who use it. And that can be a fascinating experience in itself. [I'm a native Brit, I speak French and live in France, and I'm teaching myself Japanese (very slowly, mostly by watching subtitled drama); each language and each country is remarkably different in as many ways as they are similar - like I said, fascinating].
but zero benefit trying to teach the uninterested and untalented (which I was for both of those). - perhaps what is required is not so much to drop the "boring" lessons, but instead to find teachers who can motivate their pupils to want to learn. I could have done with some of that myself - my memories of history lesson was the Romans, the Second World War, and a lot of blah in between punctuated by a procession of Kings and Queens of varying degrees of insanity. History was tedious and boring and delivered in a monotone. Yet, so much cool stuff happened in history - us, alone on this "pale blue dot", all of our technology, everything. If it has happened, it is a part of history. These days, the Beatles and Saturday Swap Shop as well as several billion wars and the discovery of x-rays. History could be an exciting subject, if we could just move on from the idea of "romans blah blah everybody died" spanning two thousand years in a six word sentence.
tl;dr: your loss... ;)