I like jeans, but I don't think I would wear them on a golf course, even if it became accepted. They're just not comfortable enough when you're moving around. When I go to the indoor driving range in the winter I don't wear jeans, even though I do wear them most days for doing other stuff.
Right. Besides the just, I dunno, 'out of place' look of jeans on the course, they're just not practical. Stick a couple of golf balls & a handful of tees in the front pocket of some tight jeans & try to fish a ball out. Not to mention jamo's point of moving around or trying to make an athletic swing in jeans.
Golf just lends itself to baggier clothes, imo.
The question I'd ask is why are you wearing tight jeans? If you get them to a proper fit, they aren't tight, they are loose and comfortable. Wrangler relaxed fit, or even better, Rustlers brand at Target. $20 or less, nice comfortable fit, can be worn working in the yard one day, then put in the wash and off to the course the next.
To each his own.