A little extra sensitivity and pleasure isn't worth getting a chick pregnant, so I wear a rubber every time. No, it doesn't feel quite as good, but having to take care of a kid for the next eighteen years would feel quite a bit worse. If I don't have a condom, I stick to foreplay. Sure it's not sex, but I have yet to meet the man who would turn down a blow job, and I am more than capable of pleasing a woman with my fingers and tongue. Having a kid or getting an STD would be way worse than wearing a condom.