The rhythm of surfing is way better than kiting and has a more direct connection to the wave's energy.
Its more social. Relaxing in between sets with your buddys, watching each other drop in. Taking a breather. The pace is more balanced. Plus the drops are 100x more exciting than the Pinocchio deal with the lines and kites. The rides are longer with the kite training wheels for sure but you cant carve as hard and I find there is less freedom being Mary Poppins.
Each to there own i guess. I'll give you the social aspect and the fact that you can surf a wave like a surfer without a kite.
But why would I want to? I'm a kitesurfer. I want to ride a wave like a kiter. In my mind its way more fun. If i want to go chilled and slow i let go of the bar completely and cruise down the wave like surfer. Most of the time I want to be going faster than what the wave can push me along. I much more enjoy the feeling of combining the power of the wave and the kite together.
But I am not a surfer and never will be.