I think this is great. California gets to experiment with a single payer system and I, as a Utahan, get to watch and see whether it works or not. Unless it completely fails, then we'll all need to bail Cali out. Can we try this in North Dakota first? ;)
Be happy - just like MJ legalization, this is true federalism at work - states rights and all.
Of course, as a CA resident, I'd be happy that people here have an option aside from the horrible individual insurance market (which, despite Obamacare, is still very expensive).