Why did everyone hate Dragon Ball evolution

Mostly because everything was wrong! if you watched the anime series you would see that goku was sent to earth to destroy it not just because.
Goku DID NOT go to school
Chi Chi was never shown to go to school.
The freaking Kamehameha wave does not heal like it is said in the movie
Everything is wrong and dragon ball z just doesn't look good with real people.
They even said goku came to earth in a meter to live there. ALL CRAP