I personally never got used to wearing the full wire cage (I have a large noggin, and a long face thus I could never see the puck around my feet via peripheral vision, and always looked down while skating around)...To add I'm a bit of a heavy breather/sweaty kind of guy when I played, and even the plastic half shield constantly fogged up.Maybe the players who do it don't do it because it's "cool" but because they aren't used to it and it hurts their game. Not being mentally comfortable is bad while playing sports.
I wore contacts back then - if I were to join up with a men's beer league today - I'd look into wearing 'sports glasses'...A few guys I played with over the years wore them.