First I have to find someone who doesn't roll over the minute he sees my dick. That doesn't happen very often. Now that I have someone actually willing to top, he has to want a condom. That hasn't happened in a long time... maybe 4 years was the last time.
So, it's a problem that seldom occurs. But it is a problem for me, as I really prefer my bottoming bare - in fact, it may make more difference to me as a bottom than as a top (where I also prefer it bare, because rubbers can squeeze my dick soft awfully fast these days 😞 ). I just hate the frictiony feel of latex, or worse, that nasty stuff they make femidoms out of.
So if I'm online, I often avoid chatting up guys who explicitly say they want condoms. Once I'm with a guy (who wants to use it) I generally try to talk him out of it first. If I'm really into him, I may acquiesce to his desire for a condom. But I'll admit I have on at least one occasion stooped to sabotage. As I said, it's a rare problem these days.