Time for Huckabee to drop out

I was watching the Ballot Bowl last night and they showed that Mitt Romney who has been out of the races for ages it seems has 255 delegate votes. Huckabee only has 247 and..i found this kind of funny. So i wonder why is Huckabee wasting his time when he has less delegates than people who arent even..in the race. Perhaps it is some type of strategy but i am not sure what it would be. Any reader comments on this issue?