Most males start out with two testicles. If both are OK from the start, one will be enough to still be able to have Children. Losing one is no big deal.
If you only have one, and that gets "crushed", then you may not be able to have kids.
Yes.
You should still be able to have erections, sex and children. If you feel badly about this because in some way you feel inferior, don't be. Your single testicle can still produce millions of sperm. You can get a false testicle to replace the old one, if you haven't already. No one will be able to tell the difference.
If you mean that one of your testicles was removed (and you now only have one), yes, it is still possible to have kids. With one testicle, there is something like a 60% chance that you will still be able to have children. You need to get fertility testing from a doctor to be sure.
Yes, a man can still have children with only one testicle. The remaining testicle can produce enough sperm for conception. As long as the testicle is healthy and functioning properly, it typically can maintain fertility. However, individual circumstances can vary, so consulting a healthcare professional is advisable for personalized guidance.
Absolutely - the man would simply be unable to sire children.
When a man has a testicle removed by a doctor, he may opt to have an implant put into the scrotum in order to make it seem like he still has both testicles. The implant does nothing other than occupy the empty space where the removed testicle once resided.
If he has a testicle, there will be sperm.
Yes
In most cases the doctors would put a 'falsie' in the scrotum. As long as the other testicle is healthy, it would not prevent reproduction.
You can produce, and you can reproduce.
The overall Count will be a bit lower, but if that testicle is healthy, the man will still be fertile.
One testicle can still produce millions of sperm. Your sperm output is more likely to be affected by other things (tight or too warm clothing, diet, alcohol, drugs etc).