I'd never say never. I've quit smoking and other things several times in my life and it really is best to just worry about today or the moment. The last time I quit I had quit for about a year then one night, my wedding night actually, I bummed a smoke off of someone and had the same reaction as you, I thought it was nasty and couldn't believe I did it for so long. Fastforward another year maybe and I kept getting cravings and I figured I'd smoke one to get it out of my system and I expected to have that same reaction as last time, needless to say it didn't happen that way and I smoked for another year after that up until a month ago. Addiction to anything is no joke and really plays games with my brain, and I'd assume others as well, and it's patient, it can plant a seed then step back and wait and when your guard is down it hits you before you know it.
Anyway that was long. Good luck and I'm glad it worked out this time.