Ageing rocker Rick Parfitt has reveals his fears about not living long enough to see his twin five-year-olds grow up.
The Status Quo guitarist is 65 and has had a quadruple heart bypass and suffered a heart attack two years ago.
He became a dad again when his wife Lyndsay, 54, had IVF treatment after a series of miscarriages before she met the star.
And even though his hell-raising days are long behind him, he fears he'll never see his kids Tommy and Lily reach their 21st birthdays.
He said: "It upsets me to think that I won't see them fully grow up. I probably won't. Even if I live to 80, they will just about be 20. I would love to see them get to 21.
"It frightens the life out of me when I think I'm not going to see them grow up, and to see what they do and what they become. I know it's morbid, but I'm only being realistic. I won't be around.
"That really scares me. I'm going to try and do as much as I can. I'm going to travel with them and take them to Disneyland. I want to be able to see their faces when they see that sort of thing. And just be with them as much as I can. I won't go away for more than three weeks now."
Earlier this year, Lyndsay was diagnosed with breast cancer, after doctors discovered four tumours.
She recently had a lumpectomy to remove the growths followed by a three-week course of radiotherapy and is now on a five year course of hormone treatment.
Talking about his own health issues, Rick told the Mail: "When Tommy comes up to me and says 'dad, what's it going to be, football or sword fighting?', it's going to have to be sword fighting because although I can do what I do on stage and jump and run on stage for two hours, when it comes to playing football, it just beats me. I just can't do it. I just can't keep up after five minutes."
Rick also has a son Richard, 39, from his first marriage to Marietta Boeker. Their daughter Heidi drowned in the family pool at the age of two. He also has a son Harry, 24, from his second marriage to Patty Beedon.
Rick, whose DVD Bula Quo! has just been released, added: "I was watching a programme on the TV today with some young kids and their fathers who are in the Navy.
"They go away for six month stints and the little girl said she wasn't sure when her dad is coming back or if he was coming back.
"That must be so awful for these kids and the parents. I now find it difficult to be away for three weeks. Believe me, it hurts. It doesn't get any easier as you get older. You just want to be with your kids.
"I miss the kids desperately now, it is getting more and more difficult to say goodbye to them. And vice versa, they find it very difficult to say goodbye to dad now.
"It gets very traumatic. There is nothing more important in my life than the kids."