It's a compromise. It's replacing one evil with another. It's more a matter of where you draw the line; I for example am in favor of nuclear energy because the waste product, while extremely dangerous for tens of thousands of years, is in a neat and relatively compact package, instead of blown out into the atmosphere.
But I digress; the only real solution is population and economic decrease. That's unlikely to happen unless something catastrophic happens, but that is the only way without replacing one bad thing with another.