My sr son wants to choose UCSC over UCLA, UCSB, USF and CU Boulder! Advice?

I know the deadline has passed and the decision is made. But I think Santa Cruz is wonderful. My son started out at Santa Barbara and - after a detour - is transferring to Santa Cruz this fall. The campus is paradise for introverts who like nature, and the vibe is very natural/organic/laid-back. A perfect match for my son.