Suck it up Buttercup! Would you be happier if he had been born with an illness that would have kept him home with you forever!? Be proud and happy that he CAN go. I have a good friend who cries each time she thinks of high school graduation a few years away for her son Josh. He has CP and will be with them as long as they can keep him home.
I agree with Renee. Cry but let them be tears of happiness. You have been blessed!