Nadal turned 32 last week and then went on to win an 11th French Open title.
It was the 17th Grand Slam of his career, narrowing the gap in the all-time list to Roger Federer, who has 20.
Injuries have taken a toll on Nadal in recent years but the Spaniard has been able to remain at the top of the sport.
Nadal’s biggest rivals Federer, Novak Djokovic and Andy Murray are all married with children.
And despite being in a long-term relationship with Xisco Perello, Nadal is yet to have a child.
When asked if his commitment to tennis is greater than Federer, Djokovic and Murray because he is not a father, Nadal played down that suggestion and revealed he thought that at 32, he’d have retired to start a family when he was younger.
Nadal told Marca: “No, I keep a commitment to what makes me happy. My life leads me to live things one way or do things one way or another.
“I also have a partner and it’s not just me who decides things. You have to adapt to the situations that are happening.
“I maintain the commitment with tennis, yes, and with my happiness. I enjoy what I like in tennis as well as tennis.
“’Have a family?’ I do not know, things are not so easy to foresee. I, at this age, thought that I would be retired and I would form a family.
“To my way of thinking I see a more structured family with a more stable life and that is what I would have liked.
“Years go by but it depends on what happens with my tennis and with my career there will come a time when a decision will have to be made and when it arrives, it will arrive, and without any kind of stress.
“They are natural things that are happening in life.”