I want to cut my siblings out of my life for not attending my wedding
Don't you think that will make them upset?
Too bad. I'm gonna take my revenge anyways
While I'm sure them not attending your wedding was painful, I think the step you're taking is a bit drastic. Family members shouldn't cut each other out of their lives. You may regret doing so later when you miss them!
I don't care. I'm over them.
Have you tried talking to them about why they didn't attend your wedding? Maybe they had a valid reason for why they couldn't attend. You should try to mend the relationship before just cutting your siblings out of your life.