Nothing... Why do we have to always see problems with ourselves that aren't problems?
Is it really that important to focus on
performance with sex?
This is a strangely mechanical approach to sex, and I don't quite understand why it is so important whether you can maintain an erection after orgasm or not. It certainly isn't something to worry about. Instead of focusing on these mechanical things as being the most important part of sex, just focus on the person you're with and gaining that emotional connection. It will make sex a meaningful experience rather than an alienating one. Instead of forcing yourself to maintain an erection, just go with it. Maybe you'll maintain one every now and then, or you'll get an erection quickly afterwards every now and then... just go with the moment and don't worry about it. There's no reason to.