I don't want to go to my sons wedding
Why dont you want to attend your son's wedding?
My son wanted me to attend the otherwise meaningless ceremony.
I am sure this is important to your son, so you should go. It would mean a lot to him.
I don't give a shit about my kid and I really don't want to go to his wedding.
I don't know your situation, but it sounds like your relationship with your son has been troubled for some time. I recognize that you find wedding ceremonies to be meaningless, but your son has invited you to his. This is a chance for you to reconnect with your son, and possibly even mend your broken relationship, so you shouldn't pass that up.