I go every now and again, never had an issue, which surprises me. But then again i have never worked outdoors so i guess that helps. I did get a couple of things cut off when I was about 22, because they were the kind that hada low risk of going bad, but I think that was only because she was trigger happy and I thought she was hot so I let her do it.
One of my colleagues, same age as me gets checked six monthly and comes back looking like Frankenstein. I ain't going to see his doctor.