I started out my current wife's GBF; at the time, sometime drag queen turned poor college student. We both got sick of men around the same time (we know some of each other's ex-boyfriends), and fell in love with each other, so got married half out of convenience and half out of mutual attraction. After about 8 years, we were still deeply in love emotionally, but I despaired of her near-zero sex drive, so castrated myself, mostly out of depression (said depression since fixed with thyroid medication). What I mostly succeeded in doing was removing any attraction I had for women, since I was a bottom when I was dating men; 10 years and we're still solid, but I've only had penetrative sex with her once since the castration, a month after to see if the equipment still worked OK. I still fantasize about dick constantly... although am no longer motivated to actually seek out said dick in real life.

In an effort to maybe empathize with herself more, I experimented with estrogen for about 4 months, long enough to sprout B cup tits and change basic body shape to a feminine one with a big butt. That finished the job the castration started; I really only get hard now when I have to pee in the morning... or when I'm actively thinking about getting fucked by men or transpeople.

The other intent/effect of the castration process was to make her unable to control me sexually, as I now can't be positively or negatively motivated in that way. It disconnected the usual marriage punishment/reward cycle.

My sex life has been mostly reduced to porn and periodic play with large dildos, which is fine, as I don't need much any more. She understands and is mostly OK with it, and we're still very physically affectionate. I sometimes question my life choices a bit, but we really do love each other, and I'm OK with the current situation.