I finally just severed my last physical connection with London, after having lived there for 14 years (in three spells) and keeping one foot there for the most of the rest of my adult life. I certainly got tired of it. It's an incredible place when you're young, interested in going out, and have a bit of money in your pocket. But if you can't afford to cab it everywhere, it's a really wearisome place to navigate. And unless you grew up there or belong to a tightly knit immigrant community, your friends are inevitably scattered all over the place, most of them miles and miles away.