I haven't had more than a litre of pop for about 5 or 6 years now. I gave it up completely when I started going to the gym, and even after I left that phase of my life, I saw no reason of buying it again. I don't even mix drinks with it.
I'm the same man, didn't drink coke or anything growing up, guess it was just a continuation of that as I got older, never really craved it. I did smoke for about 7 years though.....good with the bad right!