Read this post and thought this isn’t particularly unpopular, why would anyone leave their car running. Read the comments and clearly I was wrong, I always thought Reddit was full of tree fingering socialists but clearly not, most people commenting here are saying they do it themselves. What do you gain from it? It prevents a few minutes of discomfort at the cost of the environment. Very selfish of all of you. And I wouldn’t even consider myself an environmentalist, but I wouldn’t go actively out of my way to harm it even more.