I'm freelance and have a pretty laid back experience of London. I work partly from home in zone 2 (just one stop into zone 2 - a short walk from zone 1) and partly from a co-working space in Shoreditch.
I never take the tube at rush hour, I walk my children around the corner in leafy streets to school, hang out in local (quiet) cafes, go to the park, have a nice variety of shops to choose from with no crowds or misery at any point. I walk almost everywhere.
My children love it here - they have all their fun things right on their doorstep - swimming, parks, climbing, ice skating. Hampstead Heath is just a few stops away on the overground and we can do things like go to the zoo, or go to Camden Market for churros etc. very easily. Not to mention obvious things like the V&A, Natural History Museum etc. There are also more resources for children than there were in our old city - free classes and clubs in local libraries that def. didn't exist in our old city and so on. Central London + children is a very good mix, and I'm v. glad we ignored all the horrified looks we got when we said we were moving here!
When we go out, babysitters are plentiful and lovely, and there is SO MUCH to do. We usually go to a gig, or out for a cheap meal - I've been pleasantly surprised at how cheap eating out is here, although drinks are £££ - yikes! I think I paid something mental like £8 for a glass of wine recently (ASK FIRST).
I got the tube at rush hour by mistake a couple of weeks ago though and it was awful - several stations including Kings Cross were closed altogether because of overcrowding - so I can see how that is off-putting, but as a newly-hatched Londoner, that hasn't been my normal experience at all.
I appreciate that I am very lucky to have such a chilled experience of London.
I definitely have a more fun and laid back life here in London than I did in our last, small city north of here.