I never sit in the rear-facing seats on the bus anymore because more and more people are putting their dirty shoes on the seats. I get that public places are "dirty", and Sheldon Cooper's "bus pants" are definitely a thing, but I don't know when (younger) people completely lost respect for public places. Some of these people are even in their 30's. I'm in my 40's and everybody in my "generation" got smacked a new one by our parents or any elders nearby if we ever dared put our feet on the seat. Yesterday I saw a high schooler completely splayed out across the back row of bus seats. I saw where the shoes were, so I guess I won't be sitting in the back row anymore either.