Actually I do know who needs to hear it - people like this: https://twitter.com/kazweida/status/1521312672465051649
I know it's not the most important thing right now, but since the Roe v Wade news there have been a bunch of tweets encouraging men to get vasectomies, and/or trying to analogize between female birth control methods and vasectomies, that include some assertion to the effect of "you can just get it reversed later when you're ready for kids".
This is not true. Yes, the vasectomy reversal procedure exists but its success rate is not very good (70% at best), and the likelihood of restoring fertility only goes down as more time passes since the initial vasectomy. This is why urologists advise their patients to consider a vasectomy to be a permanent procedure.
I won't say much more about it, other than it would be nice if more forms of male birth control (e.g. Vasalgel) entered the market soon.
What I was taught (from a university-level human sexuality course) is that the success rate of reversal goes down by 10 percent per year.
Now, if that does fail, there is good news and bad news. The good news, is that the organs that produce sperm are still there and should still function just fine! The bad news is that you will NOT like the procedure for getting it out.
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Oh no, they don't do anything like that. They just have to
CW: pain
extract sperm with a needle. In your balls.
Now, perhaps I am the wrong person to make this judgement since as a gay man I have zero need for a vasectomy, but that seems quite a bit worse than the vasectomy. So that's why you should get some sperm frozen BEFORE getting snipped!
A vasectomy involves using heat to seal the sperm carrying tube shut, it's also not the most pleasant thing I believe.