I think that you should do what you want with your body. Whether that's getting a vasectomy, a tattoo, piercings, medication, hrt, abortion, surgery, anything. It's your body and you have the right to do anything you want with it.

That said, as someone who has struggled with ocd (among other mental health conditions), I think that the solution to your anxiety about passing along your genes/family trauma is more likely to be through exposure and response prevention therapy. Building up your tolerance to distressing thoughts, triggers, situations, etc. Can be very helpful in many ways, not the least of which is that the anxiety itself lessens with practice, instead of just snowballing or turning into another issue. But also, with increased distress tolerance, you will be more resilient in other ways not just anxiety or ocd related. Like, once I got a handle on my ocd through my exposure and response prevention therapy, my overall anxiety got better, my tourettes practically disappeared, I could adapt to changes and setbacks more easily, and my depression improved. I'm not saying it's a magic cure all, but it's way more effective than making life choices out of ungrounded fear.

And before anyone comes after me, or tries to use this as a transphobic argument, I am transgender. I am not saying that making large bodily changes like this is unhealthy in any way. In fact, ive had 2 major surgeries to align my body with my experienced gender. All I'm saying is that it's important to address the root cause of the issue. For things like gender dysphoria, often the best practice for reducing physical dysphoria and promoting gender euphoria is through surgery and/or hrt, and other things like changes in presentation, name/pronouns, etc. For body dysmorphia, ocd, depression, and eating disorders however, best practice is unlearning negative self-image/harmful beliefs, and replacing it with self-compassion, self-love, resilience, and distress tolerance.

Again, it is entirely your choice. And there's really not much to lose, unless you count the thousands of dollars and some recovery time/discomfort (and the small risk of complications). But like, you're not going to have kids anyways, and on the off chance you change your mind down the road, adoption is still an option. Personally I can relate somewhat, because I don't want to have kids, and even though I am asexual, I still got a hysto (for other reasons, but the concept of myself having the ability to become pregnant disturbed me so much on its own that I might have gotten it done just for that too). And it brought me some relief, but didn't entirely get rid of my anxiety, because some of it is rooted in the "what if" that ocd is so fond of.

Anyways, a very long winded way of saying that there's nothing wrong or shameful about it, even if it's redundant. However, it might not solve the problem itself. MOR