Paul, because he is amazingly talented, and cute, and has admirable family values.
George Carlin once famously said that "the wrong two Beatles are dead." I wouldn't have put it quite that cruelly, but John is the favorite Beatle of anyone with a brain, and George perhaps the favorite of people who are into the mystic. Paul is cute and Ringo has the "this could be you" quality, though.
Lennon - always Lennon since I was about 10 years old and I'm now 56 -why? He was a genius - I also rate Macca very highly - another genius( he and John needed each other) but as a bloke(me), John was the one - rebel, outspoken, brash, my fav Beatle songs are/were John's
Well with only two left I'd say Paul. His talent alone would make him #1
who ever wrote the song, she loves you ya ya ya and you know with a love like that you know it can,t be bad.