What generation has not seen mind blowing changes? I remember hearing my grandfathers generation lots of them, talking about the end of the horse and buggy, 40 hour weeks, two world wars. My great uncle traveled across the country in a car, stopped where ever they wanted and camped, no rules, no problem.
How much more mind blowing can it be than for a child (me) hiding under a school desk because the Russians were going to drop atomic bombs on us and we were going to drop bombs on them and the whole world would be destroyed, or sending men to the moon?
Things are changing all the time and we all are going to regret some of the changes, I already regret many of the paths we humans have taken in the name of progress.
I would chance to guess that in 100 years if there are such things as hobby blacksmiths they may very well be using gas or electric forges, and also there still be plenty of coal out there. Yes you may not be able to use in near other houses, lets face it starting a coal fire really stinks, on a foggy day the smell stays around here for hours. I couldn't do it in a suburban area.
Somehow we will manage, as we are very ingenious and clever, are we not?