Doziedoozie
You can walk in some places in the US (as you said... NY, SF). And to be honest, I am in the UK, and even here, I drive everywhere. Luckily, we live right in the center of a small town right now, but in previous houses we lived in, we needed two cars. Outside of London (and any bigger city), public transport isn't great. Probably comparable to the US.
I think you'll find that even in the US, people meet people outside of the church, too.
TV is not dire. I hate Eastenders & co. Most TV shows I watch are American. You can watch Sherlock & Dr Who on BBC America.
There are apps these days (like TuneIn) that lets you listen to any radio station anywhere in the world.
Weather can be crap in the UK. The US is big enough for you to choose where you want to live.
Socialising often includes food in the UK. Re. enormous helpings in the US - no one is making you eat. My American friends are perfectly slim. To be honest, when I was there, I was embarrassed because I ate a lot more than them!
Discussion about politics - depends who you talk to in the US and how they are like intellectually. Older people may be more restrained, younger people who are intelligent and educated actually like to debate.
Houses are way better. Bigger. Not because of fuel costs, but because they have more land. So what if fuel is cheap? You know fuel price here in the UK is only so high because of taxes...
Education depends on where you live (just like in the UK). I enjoyed high school in the US and the broader undergraduate degree, I believe, lets you find subjects that you're passionate about.
UK offers nice scenery. Middle Earth-like but not quite as nice as New Zealand. The US is big enough for you to see a desert and the Pacific in one day.
Seriously, I don't think the UK is as great as you think it is...