do you deserve forgiveness when you hurt others? Or you don't err at all?

Depends on what kind of thing I have done. In my case, if I hurt others, it's mostly intentional, and in that case I don't ask their forgiveness either.
But I never feel it as a burden. I will always feel better if the people who try to hurt me suffer in life. I don't love to make manual effort for revenge, but it doesn't mean I forgive them. I will take revenge if I can get it without making any effort. That gives me double satisfaction. I just feel those people are not worthy enough for me to make efforts, even if it's for revenge. I can enjoy a peaceful life without forgiving them.
I never get backlash for having such a mentality. Maybe I am too good to seperate my emotions and that's why I can do it.