Yes we do have "we're all gonna die" alarmists on one side of the topic. We also have the "how on earth will we pay for it" alarmists on the other side.

It seems...in the US anyway...that we ALWAYS have the money for some things but NEVER have the money for others. A few extra billion (with a B) for the military...ABSOLUTELY! A few extra million (with an M) for education...DO YOU THINK MONEY GROWS ON TREES?!?

Replacing old windows with new windows has an expensive out of pocket up front cost but the energy savings will eventually eclipse that up front cost. Natural gas is cheap? Were there no up front costs? Those pipes magically appeared? Wind and Solar will have upfront costs like everything else but the energy they produce will eventually be the same or less expensive than any fossil fuel based energy available today. Carbon emissions will be reduced and in 10-20 years no one will care or even remember what it cost to make the switch just like no one cares or remembers what it cost to get natural gas piped in.

Had the world not allowed itself to be bribed and held hostage by the fossil fuel industry we could have started our path towards renewable energy decades earlier and those upfront costs would have been paid for long ago. And its quite possible the world would have never heard of "Middle Eastern Terrorists" because the west wouldn't have spent the last 50 years indirectly and directly funding terror networks.