Is puking on our host less rude? That is likely to happen if you force yourself to finish.
However, being mad at someone who doesnt have the same tastes and therefore cannot finnish a meal is a proof of egocentricism, narrow mindedness and inability to be living in a democratic 21st century.
Why the hell should I be forced to stuff myself if I am full?
Why the hell should I be forced to stuff myself when I clearly do not enjoy the food?
It is more rude to force people to eat food they do not like than to go without eating.
Yes food wastage is bad, but then you are the idiot for providing a large serving and you have no right of accusing the other person of being rude.