My father was born in 1914; they didn't invent nuclear power until he was 40. It wasn't until the early 2000s that there was consensus that coal and gas caused pollution that was a very serious problem, if you set aside the smogs of the early 50s.

My grandparents were from the era of steam-powered mills; I doubt the word "pollution" had been coined before they died. I'm pretty sure the term "ecology" dates from the mid-20th-century, after all my grandparents had died.

So yes: my grandparents left me with a problem; but it's not their fault, because they didn't know. We do know, and my grandchildren would be right to curse me if I left a similar problem for them to solve, knowing what I was doing all along.