Climate change is a fact, not a theory.
I think about it on a regular basis. The amazing thing to me is that the weather (which is not the same as climate) is much different where I am than it was when I was a kid or even in University.
Summers used to be insanely hot and humid. There was a brown haze that hung over Toronto. the sky was rarely blue in the summer. Yellow would be a good a description of the color of the sky. 35, or 37C would not be unusual for a few days in the summer. Now they issue a weather warning if it's going to exceed 30C!! And let's talk about humidity. It's rarely humid. Oppressive humidity used to be the norm.
In short, the lower summer extreme temps, lower humidity, decrease in Ohio river valley dirty manufacturing, change in wind patterns, and improvement in car emissions, has made for air quality and weather that is much more enjoyable for my kids than it was when i was a kid.
Winters are much less harsh with a lot less snow. When I was a kid you could get snow in November, now I'm surprised when I can't ride my bike though the Christmas holidays. Winter arrives later and so does spring. From what I understand, it is due to the temperature change in the water in the Atlantic flowing from the south to the north.
I wouldn't trade the old weather we had, when I was a kid, for what we've had for the last 15yrs. Unfortunately, I don't think other parts of the world have benefited in the way that we have. There are many places where drought and extreme temps are going to make living almost untenable, or at the very least very, very difficult. It could easily happen in 25-40yrs that some place of significant population could be almost unlivable.
Water issues in SoCal/Arizona/Utah could be a very serious issue in the next 25yrs. OTOH - it's possible that wind and climate shift in a way that they get regular rain.
I'll say this, I've lived in a few places that I liked a lot more than living around the great lakes but one thing that makes think twice about moving back out west or the south is that I don't have to worry about water in my lifetime if I'm close to the great lakes.