Am I Wrong Because I Consider These Things “trashy” ?

Some of the things I think are “trashy” are… living in a trailer, shopping at Walmart or the dollar store for clothes, going to church in jeans (i’m not religious but I have gone with family and it bothered me to see that), drinking cheap beer, using coupons at restaurants and dirty lawns filled with toys and trash. Now I am in no way snobby or even rich. I have 2 jobs and work hard for my money but I am in no way better than anyone else. I just want to know if I am wrong for thinking this way? I was raised with manners and would never make fun of or make a scene when I see people do these things but it does irritate me. Am I a bad person?