Reread your history, Einstein was married, and divorced, married again, and became a widower.

http://en.wikipedia.org/wiki/Albert_Einstien

Don't know about Dr. Tesla.

OK... he still never had kids.
Tesla died alone in a hotel room, depressed over the death of his pigeon wife, scared of all numbers that weren't multiples of 3, disgusted by jewelry, and convinced that he was receiving transmissions from aliens.

Poor guy...

 

Don't forget Stephen Hawking, one of the most famous living physicists, he had 2 wives and 3 children.

 

Don't forget Stephen Hawking, one of the most famous living physicists, he had 2 wives and 3 children.

And look what they did to him!