It's all too complicated
I've just never felt the desire to sit down and do all the required research to get it right, as there are so many incompatible options. So I've tended to go with what works and add to it, or go for standalone gear. I keep thinking that a fanless living room PC is the answer, but when I had the budget I didn't have the time, and now I'm mortgaged I haven't the time or the budget...
Such a shame, as the technology has been around for ages. But the bloody manufacturers just cannot get their act together.
I guess my first foray was a Bluetooth speaker/iPod dock I picked up when Curry's bit the dust. That's now relegated to the bedroom. Not great for music, but wonderful for iPlayer Radio and podcasts. iPad speakers aren't loud enough to drown out the sounds of cooking (when I mostly want to listen). Also good for the iPod. Don't know how long that's got to live though, as Apple killed the iPod Classic.
I had a brief excursion into Sky. The Sky+ box is great, and not too shabby for things like iPlayer. But NFL online didn't work, without plugging a PC directly into the telly.
Then I allowed myself the expense of a decent CD player again. So the CDs came back out of their boxes, now there's too many of the buggers for my old tower (aaargghh!). That plugs into the telly, and solves the crap flatscreen speakers issue. It also has a USB socket, so talks to phones/tablets, for iPlayer, podcasts or music. A Chromecast rounds this out for iPlayer telly and if I decide to join Netflix or go Sky online for a few months to watch the Summer's cricket. Even NFL online worked via the PC, despite the promised Chromecast app still not being available. I've been mostly impressed with Chromecast, and at £30 I was less worried by not having researched it fully. I was tempted by Apple TV, but that doesn't seem to do much more.
If I wanted surround sound, this would all break down. But I'm happy with stereo, and my speakers have plenty of base.
My friend has an Onkyo box/amp with millions of inputs, and a PS3 - and he can do more-or-less anything with those and his PC. But he also has millions of remove controls and spaghetti junction behind his telly. Even he sometimes gets confused by the setup. Oh and the media interface on the PS3 is horrible. It does many things, but that menu system is tiny, and fiddly, and nasty. I am jealous of his bluetooth receiver though - so much easier than my wired USB.
Maybe I should have tried a smart TV. But I don't trust the manufacturers to make it useable. And if my £30 Chromecast is obsolete in 2 years, I won't be complaining. When it's an £800 smart telly, I damned well would have been.