Well said. For myself, in addition to what Rich has posted, my relationship to my environment, specifically the impact of letting industry and progress run amok, was brought to the forefront of my consciousness with this film. Growing up in LA the smog problem was something we all were aware of, but to see a depiction of what the near future could look like? I was never one to throw my empty beer cans out the pickup truck window, but to see that possible future, right there on the big screen, that nailed it.
While I'll never get a Nobel prize for any work I do with regards to the environment(none of us should really, we should just do it without thinking about it), that film prompted me to think a whole lot more about the state of the world around me than anything else had in the past, and that includes not being able to see downtown LA through the haze from the top of Mulholland Drive.
For that simple fact alone, the film "Blade Runner" has helped forge a much better human being than the one that existed before it.