We spent three days in Yosemite last month, and I hope it won't be my last visit.
We saw waterfalls (which made me squeal), lots of elevation changes, a mountain lion! (no photographic evidence - we were all too shocked to take a photo, but we were in the car when it happened, so we were safe), huge trees, and amazing skies.
We hiked through Toulumne Grove and walked through this huge Sequoia.
It was incredible to be in such a place, and I don't think that feeling will fade.