that's like asking a heroin addict why they bother using oxy if it's in front of them.
You're never going to find the perfect wave, or the perfect BC line, or even the perfect park run, it's about the pursuit, and the feeling you get when you have found something close to perfect is next to none.
Or you can be one of those blessed enough to ride a perfect day at teahuapoo and not wreck and get killed, and then you have officially reached the pinnacle and the rest of your life will probably be spent trying to recreate that moment.