Do you think it is okay if I don't attend my friend's debut?
Why are you not going to attend?
I'm tired of these ceremonies that don't mean anything.
Sometimes supporting those you care about is more than you. Their debut might mean nothing to you, but your presence might mean everything to them.
I don't care as long as I don't have to do it, why should I?
You don't have to do it, but you should. If you want to be a good friend then you need to support your friends-- how would you feel if your friends didn't show up at your biggest achievements?