I can see it now, hey this kid doesn't look anything like Ben Affleck...he's got buck teeth, dumbo ears, rotten teeth, no butt, hair on his knees and back but none on the top of his head...WTH???!!! Could happen...jus’ sayin’.
By the time their kid gets old enough to start to bearing a physical resemblance to the celebrity, that celebrity could be jumping the shark in a pit of drugs, alcohol, and scandals. Or could be showing signs of wear (being 20 years past their prime).