Well;
I have found that many are a good basis for superdetailing. Such as the Ford Raptor Kit. It is all in what you want and what you want to do with it .
Many times I won't spend the amount for a glue together if I am going to build a damaged or heavily modified vehicle,plane or ship.
Now there some.( Airfixe's little Volkswagen sedan For instance ) that are just plain fun to do . A mindless build to keep the hands occupied.