In my opinion, an important part of PE motivation comes from the idea that women (or at least the woman you’re living with) will respond to an increased size with a stronger libido, I.e. She/they will manifest a bigger desire for sex.
Does this really happen?
My experience pretty much sums up in that women in general are not that hung up (pun intended) on size at all. There are of course exceptions, but my experience is that if you’re anywhere over ‘very small’ you’re big enough. Some might have the occasional fantasy about having a huge one, but I don’t think size matters much in a relationship. Other stuff matters more.
My wife is so uninterested in size that I’d actually wish she’d be more interested ! She knows I PE, but she just sighs and says something like ‘why are you even doing that stuff’ ? For her it’s more about how it looks like, and hardness. She’d had some comments that she prefer the look of circumcised (‘looks nice and clean’), but have never comment on size (other than saying stuff like ‘THAT I would not touch’ or ‘ouch’ when looking at a porn actor with a huge one when we watch porn together.)