As Daniel Patrick Moynihan once put it, you are entitled to your own opinions, but not your own facts. Spend a few minutes reading about polling methodologies and playing around with a sample size calculator. California's number of registered voters was around 18.25 million in 2012. Put in 19 million if you're feeling generous to your own opinions.
They're minors. There is no equality. No one is debating that minors should be extended the full set of rights accorded to legal adults. The only time in the last 50 years this came up for debate was when 18-20 year olds were being sent off to die in a conflict that they couldn't vote against.
Also, all 50 states allow minors to wed with parental consent. http://en.wikipedia.org/wiki/Age_of_marriage_in_United_State...
Sure, ok, whatever.