I know that some stepfathers are not so bad, but my has always ignored me.
I'm so sorry to hear that. I actually have had 2 step fathers, that were married to my mom, one supported me financially growing up and the other is current and is more involved emotionally/mentally then the other was.
You are lucky. My stepfather loves my mom very much, but I am not so important to him. 
Well you should be because Im sure you are important to her and thus you should be important to him. You know there is an opera thats like cinderella but with a step father instead of a step mother, I thought that was interesting.
He is not bad to me, but I have always wanted to have a father figure in my life, he is not for that job as I see. 
Right that makes complete sense. While its not evil I still dont think its right. Moms and kids are a package deal, thats why a man becomes a stepfather when he marries her.