No, deserts heat up and expand, and you have hundreds of millions of people trying to move into your back yard, meaning you have to pay a fuck ton more in taxes to support border patrols, armies, all the while you're facing food and water supply problems because your bread basket regions suddenly are less productive, and you become more reliant on foreign sources of agriculture. Meanwhile many other costs, like insurance, start skyrocketing, or many climate-related problems simply aren't covered. Oh yes, and as mentioned elsewhere collapse of many major fisheries, which will lead to huge pressures on coastal populations in many parts of the world where those fisheries are a significant, if not primary source of protein.
Will it happen in your lifetime? If you're under thirty, very likely yes. I'm in my mid-40s, so hopefully I'll miss some of the nastier effects. My kids and grandchldren won't, sadly. But the West is pretty wealthy, so doubtless will pull through relatively alright, though tens of millions of refugees fleeing regions far more vulnerable and far less economically capable of weathering the worst of it, will start showing up, as I mention above, and the costs of keeping them out or integrating them will be huge. Some areas will simply become unlivable by even the hardier animals, and people have this habit of not just sitting down and dying when survival where they are becomes impossible.