I sometimes drink Pepsi but greatly prefer Coca Cola. I also drink a bit of Dr. Peppers, but it's both hard to get and more expensive here.
I don't like the taste of the artificial sweeteners, so no diet cola for me.
BTW my dad worked for The Coca Cola company for a few years after graduating as a chemical engineer, performing quality assurance at Coca Cola (and partners) bottling factories around the world. We got free Coca Cola products back then, but OTOH rarely got to see my dad due to massive traveling (> 200 days a year).
I don't know if my taste for Coca Cola started back then, but in any case I still much prefer The Real Thing.