I lived in tracksuits and skirts as a child, started wearing jeans as a young teen but only REALLY loose ones.
I must admit, I dislike the fact every single person just about wears jeans, making you seem like just one of the mob, but once I find a not too loose, not too tight, low cut, soft pair, I find them very comforting, especially in Winter with long socks worn under them.
I also love jogpants made of that shiny, soft material and loose crop trousers that come to the calf.
Tight fitting jeans I can only wear on occasional days when I feel like some pressure against my skin.
As to underwear... hate, hate, hate, but it beats having to wash my clothing more often.