This professor at IIT is very well known for his books on physics in India. I can't find the exact link on Quora, but the answer said that he didn't marry because he loved his research too much.
I'm specifically asking if personal (family) life hinders or holds a person back from reaching one's full research potential.
Just a speculation - maybe a person could achieve a Nobel or likewise in his field if he could have spent more time on research than taking care or be there for his family. Maybe not.
I'm not asking strategies to balance work-life.