Personally, I don't use any of these things. But it doesn't mean I wouldn't. I just don't see the point in paying more than it would cost to make a meal, to have a crap meal.
But... part of what makes us human is the ability to create and enjoy a whole myriad of things. Sure, like carpentry. Nobody BUYS a chair any more, we all sit and make our own right? Nobody uses central heating, we build a fire every night, don't we? Nobody buys a package holiday, we all go out to the park or to the seaside and enjoy a "real" thing, right?
See how silly that sounds? Now consider this... I really couldn't care what my food tastes like. Though I have a sense of taste, I really don't care what I'm eating. To me, a £2 ready meal tastes just the same as the meals that were prepared from scratch by my ex-wife (a professional cook at one point in her life). That's not to say nobody else could. I'm sure they can, the same way they can see the difference between 4K, HD and SD which also escapes me. I'm sure that organic carrot sauteed in some very expensive concoction tastes wonderful to you. It tastes like a wet carrot to me. My sense of smell/taste is perfectly intact. I can tell you what I'm eating, I can taste "differences", etc. I actually don't like spicy food at all. But it's so far from being a factor in my life that if I lived alone, I'd only bother with cheap microwave meals. Maybe a roast at Christmas, but more for the procedures of doing so than any noticeable difference.
Ever eaten in a gastro pub? You think they cook all that from the finest venison caught fresh that morning? Or do you think it's a set range of meals that their caterers deliver in freeze-bags earlier in the month before you get there? Sure, I'm certain that some places do have all that. But most people wouldn't even notice. A lot of food taste is purely psychological (e.g. the blue-baked-beans thing) and the placebo of thinking it LOOKS like a place that would cook all fresh stuff makes you think it tastes better.
To be honest, I'd be perfectly happy to live off this stuff if it was cheap enough. The loss of experience of the "taste" would be more than made up for by the time it saves and the money in my pocket that I can spend on something that I *can* enjoy. I can't really say that I've ever really *enjoyed* food. I eat it. I like certain foods more. But I've never cooed over some rare blue cheese or gone doolally over a horse steak. It's all just food to me. People talk to me about wine as if they can taste the difference between different years of grapes, let alone between a bottle of red and white (hint: almost everybody CANNOT in a proper double-blind test). It just doesn't register to me. I know Coke from Pepsi and both from random colas. But... to be honest... who cares? I might have preference but it's barely figuring in my life if I get served the other unless I specifically asked for something in particular. And I never would.
As such, some people don't really care about the "human experience" of food. I'm one of them. I'll happily choose a McDonald's breakfast over the most elaborate meal at The Ritz any day. Not because it tastes better but - to me - it doesn't taste different enough to care. And I don't have to dress up to go to the drive-thru.
There's a reason people have microwaves. You think nobody ever uses them, except to heat up water? Of course they do. And virtually every household has one. Because most of the time it's absolutely fine and nobody can tell the difference. But when they first come out everyone decried them as "artificial", etc.
I had a look on Amazon the other day... there's a "breakfast maker" thing that's a microwave/grill, with a hotplate/hob on top and a toaster on the side, etc. It's a small box. That small box would do EVERY piece of cooking I would ever need to be able to do in my entire life. As such, some food supplement / food replacement / synthetic meat / unusual meat substitute / unaccustomed animal steak / etc. really doesn't figure in my life past the pence-per-kilo figure.