it's just something you have to live with...you can grow to like it. If you want your prostate or your balls removed, I guess your family could try to spend that kind of money
But there's no way to stop anyone from ejaculating. Just enjoy it! Grow to like it, because it's very unlikely that you're gonna find a way to stop it.
All guys (who can) start ejaculating at one point or another, and if you want kids, then you have to be able to ejaculate!