I was the same until I needed prescription glasses. My sunglasses now were much more expensive than the cheap, crap ones but as a direct consequence from that I pay much more attention to them. I haven’t lost or destroyed them despite having them for 7 years now. So my advice is splurge a little bit and get yourself some nice sunglasses. I’m sure you’ll take better care of them than of the cheap ones.
Didn’t really think about where Jack & Jones is from but definitely didn’t think they were danish. Also Ray-Ban is Italian (now) and…until 5 Minutes I’ve always assumed that was some kind of name instead of it literally meaning “banning of sun rays”. Oops