I've started stretching my ear for a few weeks now, and they are up to a 4mm stretch and I was wondering what does people think about them? I know that some of my friends have started trying to stretch theirs ever since I started.
You are stretching way too fast. Read this and listen to what it says so you don't f*** up your ears and get a blowout or a tear. link
If you stretch slowly and have healthy lobes, I think it is attractive up to the point where your lobes start to bulge out from the rest of your ears. Even then, on the right person it can still look good. Stretched lobes are one of those things that you either love or hate. Plenty of guys can't stand them and others love them. You should only continue with it if it's something that you truly decide to do for yourself and not because it will make you attractive or unattractive to guys.