Who knows? Bilbo had already lived longer than any hobbit befor him when he left for Valinor. They will probably live longer in Valinor than they would in the Shire, no hard work, sadness or pain, I belive Bilbos time there was short but happy. I wish he lived long enough to welcome Sam, but that's not very likely..
"Don't complain under the stars
about the lack of bright spots in you life."
Henrik Wergeland, Norwegian writer