Again, not trying to be an ass at you. But I think the general sentiment you'll see is that outside of rare exceptions (e.g., snowstorms), people aren't down with this. It's a practice that was done, or at least tolerated, by past generations. Now it's viewed as selfish because it's essentially laying claim to public property you don't own.

People may differ on what to do about it. Some will say move them and park there, anyhow. I'm not inclined to do that. You don't know who you're messing with. It could be someone who doesn't care, and you park there and it's fine. Or you could come back and find your car keyed or otherwise. In my mind, if someone wants to be a dick and claim it, whatever. It's not worth escalating a situation with some random and I'm not out to right other people's wrongs in the world, so I'll just find another spot.