Should I go to commencement (graduation) to please my parents?

I'm a senior in high school, and I'm going to be graduating from high school and from a community college with an Associates Degree (Hard to explain how- It's like a double credit program). My commencement (where you walk across the stage and get the degree) is this Saturday, and my parents really want me to go. However, I don't want to go because I hate large crowds, long speeches and etc. I don't want to be selfish because I know this is important to them, but at the same time I feel like I should be able to decide if I want to go or not. I feel that because I was the one who did all the work to graduate, I shouldn't feel guilty for not going. Should I go to commencement to make them happy, or should I skip it like I originally planned?

Also, before someone throws out "they paid for you to go", it was free. It was through a privately-funded program for high school students in my area.