Bilbo barely passed Old Took's record lifespan after having a supernaturally-life-extending ring for 60 years. which begs a question. what the hell did Old Took do
I have a theory that somewhere back up the line gandalf fucked a took. This sounds like complete crack but hear me out. The tooks are rumored to have “fairy blood” which in LOTR terms means either elves or maia. There is an ancestor who’s unusually tall and many of them are noted to live unusually long lives unless they meet with illness or injury, same as the numenorians did. They don’t hve extra pointy ears and elves don’t have a special interest in the line. But who DOES have a special interest in looking after tooks (and bilbo who is a took on his mother’s side/his adopted son frodo)? Gandalf. That dude is ALWAYS fussing over some silly little guy. He regularly brought the old took birthday presents.
Back in the day some bold hobbitess decided to climb that old man and ever since then gandalf has been looking after his line of tiny crazy bastards and no one will convince me otherwise.
Gandalf's attitude towards Pippin just took on a whole new layer.