i'm young(er) - 29 - and want to address this clothes thing

i understand the logic behind it - dress like you expect to be treated or like you deserve to be in the front of the plane or whatever

but

planes are uncomfortable. airports are even more so. clothes get wrinkled. so i refuse to wear nice ones when i travel - jeans only, with a t-shirt and maybe a fleece. makes me feel better. am i a slob? or just someone who wants to be comfortable? i don't know, but i would argue that the platinum stamp on my ticket should have more to do with how i'm treated than my levis