But how much do YOU waste sugarified-water with vitamins / week?
For me, zero. I like the taste of Coke, and I used to really love the taste of Lilt (pineapple and grapefruit, only sold in the UK, same maker. The only soft drink I know that actually tastes refreshing and will quench thirst for more than 10 minutes). But once you realize how much sugar this stuff contains (and any sugar substitutes are likely much worse), you really want to stop.
I drink tea all day round (with or without milk, no sugar) instead. When the choice is limited to soft drinks, I go for water.
And on a related note, I haven't seen the inside of a McDonald's in 15 years or so
OK, that's a lie: when traveling in the US, I sometimes stopped to use their lavatories, when there was nothnig else for miles along our Nevada trail. I would order tea so as not to feel guilty about ripping them off. But at McDonald's, tea is as far as I will go.
My guilty pleasure instead is a cold lager before bedtime. (Probably not too good an idea, either, I know!)
Oh, and energy drinks - they taste like battery acid! I do drink Red Bull, reluctantly, to keep me alert when driving, especially at night, but I hate it. The inside of the car stinks of the drink for a few hours afterwards.