"Lefties"? You would have to be extremely ignorant not to see the big picture. Like everything else, it takes investment to make renewable energy viable. How much do you think it costs to build a coal plant and mine coal for 1 years worth of energy?
The big picture is just another description for the the physical world, and the physical world has its limits. For example, the alchemists were never able to turn lead into gold. Throwing more money at wind and solar, especially other people’s money, can’t get the wind to blow 24 hours a day or the sun to shine longer.