It's a multi billion dollar industry, probably employing tens, if not hundreds of thousands world wide. It needs to be a problem, and the bigger the problem, the more the industry will grow and everyone involved in it will be better off.
There can't be seen to be any good come out of it. It all needs to be bad. So despite increasing rainfall globally, longer growing seasons, and increased atmospheric CO2 levels, We need to say global warming is going to be catastrophic to the worlds food supply. Yet on we go producing an extra 40 million tonnes of food each and every year? I wonder why?
If there was no warming happening, and if it was not going to be a problem, what the hell would a climate scientist have to do? The job probably wouldn't even exist!
There's heaps of reasons. I thought they'd be obvious?
See ya's.