Have you ever had a guy refuse to use a condom?

I'm 20 and when I ended up with an STD a few years ago (at least it was easily cured), it really opened my mind to always using condoms... I always hear guys complaining about using them. Girls too actually, but it seems to be guys more that I've noticed. Have you ever had a guy refuse to use a condom? Has it happened often to you? Answer the poll according to the question in the title.