DIET COKE. Is it addicting?

I'm doing a little research. I was addicted to diet coke. I gave it up 3 years ago because I was diagnosed with a weird eye condition that they could find no reason for. I was fed up with feeling like I "needed" diet coke and ingesting all that aspertime (sp). I figured it is just as likely the cause as anything else. Anyway, my question is..... Does anyone else feel like they have a true "addiction" to it? I felt mine was because I went through withdrawls (not to caffeine b/c I still drank coffee) and I still have cravings. Also, after giving it up I didn't struggle with my weight as much. Anyone who feels they are addicted, struggling with weight?