Well, let's be honest. Should I trust you to give me heart bypass surgery? No, because you don't know anything about it. Education stands for something. It's the mill worker losing his house, vs the environmental scientist. I think there is an imbalance in knowledge on the subject here. It is a tragedy that poverty leads to a depravation of education. That's unfair, and it would be nice to change, but as of now, it's the truth.
The more educated people are on the subject, the more likely they are to believe in it. The experts that are skeptics are a very small minority. And what can be done about them, anyway?
And that, when it gets right down to it, is the reason I mostly tire of these discussions. The evidence of global warming, and humanity's influence, is so overwhelming when you actually look for it, that I don't know what other argument could be made. The best thing you can come up with in contrast are few and far between anecdotes like this thread's, which aren't even that hard to rebuke in their own right.
It's like you're asking for proof of Newtonian laws, or the theory of arithmetic. What can I possibly say that would convince you more than the sea of evidence already established around you by professionals?