Ashton Kutcher loves family freedom

May 13, 2010, 16:34 GMT

Ashton Kutcher doesn't want to have children with Demi Moore.

The actor is stepfather to his wife's three kids with ex-husband Bruce Willis - daughters Rumer, 21, Scout, 18, and Tallulah, 16 - and admits he is glad the girls are growing more independent as it gives the couple more time alone together.

When asked about the possibility of them having a child together, Ashton said: "There is something attractive about our third girl - she's 16 now - gaining some independence. I get to walk the dogs in the morning because she can drive herself to school now. There is a level of independence that we've never had since our relationship started, and an ability to spend time together doing things that we might want to take advantage of. Because in our relationship we've always had kids.

"We get to do a lot of things now... There is something very attractive about what we can do in the world and for the world, given that responsibility in a different place."

However, the 32-year-old star laughed off the possibility that his 47-year-old spouse is too old to get pregnant again.

He added on US TV show 'Nightline': "I think my wife is a genetic freak. I've no worries there."