My parents wont stop feeding our puupy people food!!!!!?

Our dog eats everything from dirt to steak.. But he is a healthy little guy! Its hard not to give into the temptations, they are jus soo cute an love you so much when you feed them :) As long as they are taking him to the vet and they say he is a healthy little guy then i see no problem, but if the vet says he is going to get sick or have a bad back or whatever, then they should think about the pooches future.. really nothin u can do though, but let them know your opinion.