So everyone is wrong who he has been a dick to, because you had a better experience? That isn't how these things work.
The same could be said for people who have had bad experiences with celebs. Just because you've had a bad experience doesn't mean that they're bad or terrible people. It just means that you caught them at the wrong time.I'm not saying bad celebrities don't exist. I'm just saying that celebrities are people too and it can get a bit tiring and exhausting having random strangers they don't even know come up and bombard them with wanting autographs and pictures all the time.
I met Brent Spiner in Novi Michigan and he was a total Dick to me and my 4 year old Daughter. I still hold a definite grudge, He's only cool to people paying him, anyione else is garbage to him and gets treated as such. His behavior was unbelievable. It forever changed my opinion of him and I still get agitated if I see him in an episode or on TV.