Sir Elton John's husband David Furnish is devastated at the prospect of never having kids, blaming the superstar's busy workload for denying him the chance of fatherhood.

The pair, who married in a civil ceremony in 2005, had always dreamt of raising a family together.

But now Furnish concedes this is never likely to happen -- because Elton's always too busy.

He says, "I wanted children. We talked extensively about adopting, but it came down to Elton saying, 'I'm going to continue to do what I do and it will be very difficult to raise a child with you if I'm not going to be there'."

Furnish, 45, fears he will always be sad about the decision.

He adds, "It will be my one regret when I leave this planet; that I never had children of my own, because I really love children."