So I tend to not be able to cum from sex. I have realised it's because I take too long and then my penis is desensitized and then it becomes more and more difficult to orgasm. If I were to allow myself to cum in the first 15 minutes, then that would work. But after a while I just can't feel much even though I'm still hard.

I'm wondering if there are any really good thin condoms which don't desensitize the penis?