It is a tricky situation isn't it? We wouldn't have gotten where we are without fossil fuels, but now we realize they are not sustainable to be dependent on and we cannot continue this level of growth. I don't think it is actually possible using current means to power what we have come to know as a "first-world lifestyle" for the majority of the planet.
Thats not true. We don't know if we would be able to be were we at.
There is also no value in this. If we owuldn't known about progress through oil and gas, who would say that we would be unable to get to the same point just a 100 years later?
No own would be hurt if we would have achieved this 100 years later but healthier.
It was also ignored on purpose. Oil companies knew very well, researchers knew. Apparently there were big demonstrations here in germany in the 70ties so our parents knew too.
Life came inbetween apparently.
And from a pure calculation point of view: Its actually very easy to switch over to renewable. As of today, we do have everything we need.
The only thing missing is people doing it.
And just to be clear: it would repay itself.