Why Hate on poor Galio?

Going into a normal the other day as support I picked (I haven't played very long so I am reluctant to call him my main but made it to Level 7 so by far my best champ), My ADC, a , said "you can't play Galio, he has the worst win rate in LOL" and when I didn't change he didn't lock his pick.
Is that true? I mean I do well with him and I am really not very good. Maybe people are using him wrong? So here is my case for Galio:

First of all I only Sup never lane, his R -Idol of Durand - is an awesome multi target taunt and W - Bulwark- are wasted without a team mate to back you up. When my ADC is working on at Turret instead of tanking I will often fall back and use my E - Righteous gust - to push more minions down the lane ahead of enemy waves. Opponents - You will want to avoid other support tanks but he is known as a mage crusher thanks to his passive, so having Champs like frequently in the bottom lane makes Galio a viable counter. Allies - I have trouble keeping alive better to team up with also if you can catch the other champs in Galio's Ult and combo it with an Ult from They have a good shot at a PentaKill There are better players who no doubt have shared better builds than what I have come up with, so I won't get into too much detail, but here is what works for me as a main Item set My Math may be questionable but with these items, masteries and runes I use @ Level 18 should yield- 2,200 bonus health 141 bonus magic resist 287.6 Ability Power 550% health regen

I know you probably won't do it but I would encourage you to try it out before you comment. I suspect that many of the most negative responses will be from people that have never used Galio or even seen him in action