Interesting thread:
1) I totally rock my LL Bean Wicked good slippers with jeans (not jeggings- jeans that cover most of my feet) in public. Not only are they warm, they have rubber soles so I don't fall on my face

I don't do it often, but I do it on lazy weekends.
2) I think this legging trend is way more offensive now than in the 80's. Mind you I was only 8 or 9 when the 80's ended, so maybe I was just less offended. However, working in a public high school now, I must say that leggings and uggs are UGLY. When I'm walking in the halls between classes, especially the stairs I find that I'm only looking at black spandex butts of all sizes. My quote to another teacher last week was "Every passing time I feel like I'm floating in a sea of black spandex asses." My most recent issue with this is that the students are clearly misinterpreting "tights" and "leggings" because I'd say at least 30% are quite translucent, and it's quite obvious that there isn't underwear being worn with most of them. Ewwwwwwww.
End rant.