Aphil is right, it's probably pretty high in calories, but if that helps you get off soda, and that's what you can do right now, I'd say to stick with it until you get past the soda addiction.
Later on, you could try cutting the sugar back a little at a time, like 3/4 cup, and do that for a while, then 1/2 cup, and so on. Personally, I still drink my hot tea with sugar, it's just one thing I'm not ready to give up yet, but I've been slowly cutting the sugar down as I'm able. Laying off sweet things like candy bars and sodas, I've noticed that my tea started tasting too sweet, I guess because I wasn't used to all the sugar in other things. That's when I cut it down. I don't know if it will work the same way for you, but I bet it will.
I think, the plan you can stick to is better than the plan that's so frustrating you can't stick with it for the long run. You're making changes for life, forever, here, so if some of those changes require smaller steps to get there, I think that's just what you have to do, and there's no shame or harm in that.
Good for you, for giving up soda!

I gave them up a few months ago, too, and am glad for it. I really don't miss them! Good luck with your goals!