I think scientists can make some larger statements on the impacts. No one can tell you what exactly it would be like at any particular location, But what you're doing is exaggerating the amount of uncertainty, and then trying to defend warming trends by invoking even less certain predictions. It's hard not to see how you aren't just being a contrarian simply because you don't like the answers science can provide.
When rain belts shift northward in North America, arid conditions will begin to become the norm in large parts of the American Midwest, and that will mean American food security will become, at some point over the next century so, one of the most serious issues the US has ever had to face. And this isn't a matter if whether it will happen or not, the debate is over WHEN it will happen.
Pumping vast amounts of formerly sequestered CO2 into the atmosphere is just plain bad. We should be moving at all speed to alternative energy sources, and either leaving the oil and coal in the ground, or finding some other use for it that doesn't involve releasing CO2 into the atmosphere.