I think solar is great, except for all the wildlife it kills. Wind power is good, other than all the birds that fly into the props. Nuclear is cheap and good, as long as it remains contained. No power source is without some discrepancy.
Advances in technology will provide more options. Has only been 100 years since Rockefeller switched his focus from lamp oil to gasoline.
I remember what real smog looked like. We have improved our air and water quality (remember Lake Erie?) much in the past 50 years.
We can and should do more. Alternative energy sources will evolve. Better designs, better storage, and more cost effective. But you and I require transportation to work on Monday. We need clean and cheap power. Our immediate needs must be met, with a focus on the future. There are different opinions as how much to do now, how much can wait. We all know a shift will come.