Scientists at Cornell University may be closing in on the long-sought “holy grail” of male contraception: a safe, reversible, nonhormonal method that completely halts sperm production. In a breakthrough mouse study, researchers used a compound called JQ1 to temporarily shut down meiosis—the critical process that produces sperm—without causing lasting harm. After treatment stopped, sperm production bounced back, fertility returned, and the animals produced healthy offspring.
Never regretted it myself, but technically quite a good chance of reversibility (85+%) and 95+% chance of viable artificial insemination if things change.
Also minimal, short lived discomfort.
It’s considered permanent though. Shouldn’t go ahead under view it can be reversed. Saying that, the piece of mind it brings is wonderful.
Also, compare those to the near certain side effects of female contraception, which is just taken as the natural state of affairs.
Valid, those are pretty good odds though, mind you I looked it up decades ago and the reversal was a pretty involved piece of expensive microsurgery.