I wonder about this every time I see it. I can't help but suspect there's a whole lot of cope going on and they're just going through the degenerate motions even though they're in pain/numb and horrified by the monstrosity between their legs. It's like they're trying to psych themselves up for hot sexy funtimes, even though they're not genuinely feeling it.
That recently deceased gamer tranny (Remilia?) had a post where they talked about how after a certain point the AGP feelings started to fade and he kept doing more and more and wanting more surgery to try and make the AGP euphoria come back, but it never worked and it only made him more miserable.
They're chasing the dragon, man.