I'm bisexual. Am I truly shallow for turning down unattractive people?

Okay. I'm bisexual, 16 years old male.
I really work hard to keep up a good appearance. I workout evey morning, I eat healthy and take care of my skin.

That's about what I do. I don't style my hair crazy or wear make up. I wear nice clothes though.

I'm not too full of myself but when someone expresses interest in me and he/she is not attractive like fat or with acne I'd be thinking that I deserve someone better looking. I'm polite though. I don't tell people they're ugly or anything like that.

Should I feel bad?