Well I will discuss the most important issue first, the "sin" tax on something the Government feels is bad for us and so they tax it to death.
All extra taxes and fees for things like this is wrong, it really has nothing to do with the Government wanting to steer people away from bad things, that is all just cover, the real issue is more taxes. The Government at all levels cannot control their out of control spending so they look for any excuse to increase taxes on us all. Recently Florida doubles every fee and every charge for services the State offers, for example last Septenber they doubled the price to renew your drivers license and doubles the tag renewal fees at the same time. The thing that ****** me off the most is that while every non-government employed person in America is learning how to survive on less, the Government is still increasing taxes and hiring millions of new Government employees and spending more tax money than ever before.
This "sin" tax will not be the last, they started with tobacco products and now it is soda, next will be fast food and icecream, all under the "claim" they are trying to discourage their use but I ask this question, if they really want people to stop using the things they are setting the very high taxes on, why are they at the same time spending the new tax money before they ever get it?
As far as sugars in soda I would rather my kids be exposed to something natural than something chemically created that did not exist in nature. I don't do much soda but we do have sweet tea (southern man, can't help it) but most of the time we have juice and water, I even take my own well water with me on trips in the cooler because I can't stand city water and bottled water is something I have difficulty paying for.
I guess in the homes where there is no real supervision available and kids have access to whatever they want, I would say the diet drinks are the best because massive amounts of processed sugars is not really a good idea, but I am always wondering what new scientific revelation is going to suddenly appear concerning all these artificial sweetners one day.