I believe that Paul. M. Is one of those musicians who let fame get to his head, he is talented, but his post Beatles music (and some of his Beatles songs) are pretty bad. He even went as far as to debate the title of Lennon/McCartney and try to get it changed to McCartney/Lennon
No, Paul McCartney is not vain, because he is simply an extremely successful artist. Paul McCartney is talented and is one of the most successful singers of all time. A person cannot be that successful without someone else accusing them of being vain. He is doing the best he can to portray a good image and should be proud of his success.