I'm not going to invite my parents to my wedding
Why wouldn't you invite your parents to your wedding?
They are not important to me
It's expected that someone would invite their parents to their wedding. Have you thought about talking to them and bridging that gap in your life?
Nah, I don't want to have contact with them.
I just think this is a decision you'll regret later in life. It's important to have family members when celebrating a big occasion.