If you're talking about my mindset of wanting to scar the girl's soul with mindblowing sex, I think it's just a personality thing but I would guess it's a character trait that's probably more prevalent among guys with big dicks.

When I fuck a girl I want to give her the most intense and memorable experience possible.

One reason is that I genuinely enjoy giving women pleasure (as long as I trust them and actually like them). Another is that it makes me feel powerful to make a woman completely lose her mind, to see the look of confusion in her eyes after she cums as if she'd just come back from another dimension, to see and feel her entire body shake uncontrollably while she screams at the top of her lungs, to hear her tell me over and over how big and good I feel inside her, etc...

It's a high like no other for me and a very powerful feeling. Along the same lines, it's a rush for me to think that I fucked a girl so well that every single guy before and after me has been and will be a disappointment in comparison.