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.
Stepfather
A stepfather or stepdad is a non-biological father figure who is married to one's parent. A stepfather-in-law is a stepfather of one's spouse. The children of the stepfather-in-law would be the person's stepbrothers-in-law and stepsisters-in-law.
Culture.
Though less common in literature than evil stepmothers, there are also cases of evil "stepfathers", such as in the fairy tales "The Gold-Bearded Man" (in a
go and what she brings to the table is so incredible and she's so creative and outstanding. And I always have a great time working with her. There was no ego involved, you know, me - that was the first video that I'd ever stepped up to the plate to literally co-direct. I'd always been very opinionated and very you know, I always voice my ideas and whatnot in my videos, but this was the first one I actually took credit for in co-directing. And