However, the singer, who will turn 77 on October 14, says he has an idea about when he would want to stop working.
"I'm still touring, my music still sells, and next month I'll be 77. I'm not quite ready to hang up my guitar but after nearly 60 years in the music business, I've been giving some thought to where, one day, I might want to end up," Richard tells Sunday Times newspaper.
The "Devil Woman" singer spent two years being investigated over historic allegations against him, and he says during the "traumatic" enquiry, he hardly slept for two hours at a time.