I can't stand the movie forest gump.
What don't you like about Forest Gump?
It's too shallow on a psychological level.
I can see your point and I respect your judgment and opinion on the movie since it's okay to not like something. However, I think your criticism might be in the minority. Too many people love that movie so they will likely disagree with your opinion.
Who cares?
There's nothing wrong with disliking a popular movie. It's probably best if you don't tell people they're shallow for liking it, though. That'll just make people mad at you.