Dear Ezekiel,
I don't know how you define "sex", like Bill Clinton or more largely? And does sex work if you take on a stone part?
Altogether, I get along with many kinds of sex, it's just I need long to get off as depending on which of my body parts are involved it becomes an epic battle between my horniness and my body dysphoria and I need lots of mind games to avoid a mental crash. At least afterwards, I don't fall into a depression or something, but sometimes I feel simultaneously happy, relaxed, tired and confused in a bad way as the body parts don't fit.
Others mentioned problems with strap-ons as not "being the real thing". I also have that problem, but only if the dildo attached to it mimicks a penis. If it's a fancy toy, it works well as it's not supposed to replace something I should have then.