A guy told me he had a vasectomy (and didn't freeze any sperm). I asked what about if he one day wants to have children and he said that he would rather use a sperm donor because his genetics had given him a hard life.
I'm intrigued because on the one hand that would mean his future wife could potentially get children from high quality genetics without having to chase such a popular man.
But on the other hand it seems off, possibly like it might be just a phase then one day he'll change his mind and claim it's not even his children
He might be at risk for certain diseases and may not want to pass that onto a child.