For this reason, London, Boston, Chicago, and New York are effectively ruled out for me as places to live for a large enough chunk of the year.
I don't really like Seattle very much. Their airport uses TSA. The employers in the area that are within walking distance of any of the places I would like to live don't greatly excite me either.
San Francisco meets a lot of special requirements that are hard to meet: -Very walkable -Decent transportation options (Uber) -Temperate -Good collection of employers -Empirical data appears to show a great number of interesting people
I don't think I've read a single pro-San Francisco blog, and even if I did, someone's opinion about San Francisco would only factor into a small part of my decisions to live here.