34 is young when you are 60 and then some.
He was exactly 60, not "and then some."
But you're still making a completely unjusitifiable assumption.
He left his younger girlfriend to marry his first wife, who was a divorcee with a child and was five years older than his girlfriend.
He stayed married to her until she died at the age of 57.
So clearly there was no hint of any predilection for younger women for 30 years.
If he was truly on the hunt for a youth alone he could easily choose from thousands of beautiful women a decade younger than Heather Mills, and almost every one would be more than happy to sign a prenup.
Heather Mills is a mature woman in her mid-30s, a divorcee like Linda McCartney was, employed in the fashion industry like Linda was and an outspoken activist like Linda was.
He clearly married her because he loved her for a lot of qualities that reminded him of Linda - if he was, as you slanderously claim, out for "young stuff" he could have any number of younger, prettier women who would have signed documents to keep his fortune intact.