Edit to add something more meaningful :

I don't like people who litter butts. I think its trashy. I think there's a lot of people who are trashy.

There's plenty of things that people do that annoys me. That's life. Don't ever presume yourself so important that you are "above being annoyed by the common peasants about you". Its attitudes like the ones you're displaying in your post which may very well be part of why people don't care about your comfort level.

Honestly, if you can't handle it, don't walk around. Get a car. If you're going to cry like a little girl with a skinned knee next time you walk over a sewer grate, by all means, get your mom to drive you about.