As much as I would love to see him back in a Pats uniform, I can't fault his decision.
He is literally living the life.
Already one of, if not the best TE's in league history, SB rings, millions in the bank, smokeshow for a girlfriend, great family and friends... and he's retired before 30 with unlimited time to do anything and everything, or nothing.
I honestly feel like he's mentally done with the pressure and work of being an NFL player and will most definitely not be returning, and I don't blame him one bit. Everything he's been through injury wise, he shouldn't give it another thought.