I'm going to break up with a girl on the same day she asked me out
Do you have any specific feelings about breaking up with her?
It's great. I'm happy because I don't have to date her anymore.
You shouldn't date someone and break up with them instantly. Next time just be honest about not wanting to be in a relationship. Otherwise you will hurt people needlessly.
I wanted to break up with her, it was the right thing to do since she is a bitch.
You can feel however you want about her, but I think you shouldn't have gone out on a date with her in the first place as it seems you never really liked her. Moving forward I think the considerate thing to do would be to respectfully decline the first date rather than waste another person's time.