Is male infertility hereditary?

Haha, if the male is infertile, how to you expect him to have kids to pass his infertility to!!!!

Heh! :)
As ludicrous as it may sound, it may as well be.

If someone in the family, say an uncle, is infertile, then there is a chance that one of his nephews maybe infertile.

Where are talking here about hereditary infertility, not infertility caused by a medical condition or an accident, etc.

Usually in such families the men who have fathered children, have weak sperm or low sperm count and usually don't have many children.

It's all in the genes!
It can be. I just had surgery for a varicose vain which is from birth or hereditary. The vain's valves do not function properly and instead of the blood flowing up to the heart it flows back down. This causes the heat if the blood to kill the sperm and cause low sperm counts. It is very common and many men might have it and never know.
It could be if it has come as a result of recessive genes from both parants
Obviously not. nuff said
Never heard of