I dont get it.....

Why did GT get so much hate?

no clue, haters gotta hate lol

Because it drifted way too much from the original series. Plus, no one really enjoyed Goku being a kid through the whole thing (nor did I). I actually liked DBGT, however did not like the way it ended. I also didn't like when the Cell Saga ended, and so I tend to just pretend that the Buu Saga was the end considering it's the only stopping point where Goku lived and didn't fly off a dragon or die!

Honestly, I totally disagree with the existence of GT. In my opinion, really bad story ideas, characters have changed to the worst and the weirdest( for example Gohan became a nerd as well as Trunks) but I love that they continued transformations through the saiyans ( Goku becoming SSj4, Goten and Trunks being able to become SSj2 and SSj3...)

The first half of dbgt was trying to emulate dragon ball and the 2nd half dbz. I disagree with the whole Gohan being a nerd thing as a bad thing he was allready heading that direction with out battle to fight in peace he moved on with his life and did what he wanted to do.

in my eyes dbgt is for........................... a younger public if you know what i mean

Erm videl, if I remember correctly in the GT opening sequence, you briefly see kid goku's..........thingy I doubt they would let little kids see that.

.. when i was a little kid they still showed guns and violence in animated series

Lol, im guessing they dont like gt because of how some of the z fighters dont fight anymore and lack their fighting spirit, and im guessing also cuz of the lenght of the amount of eps in the series.