Speaking of changing tastes as an adult, I had my first pizza at age 15, my first "Mexican" at 17 (in college, I wondered what this new kind of food could be, didn't like it). I didn't like beer for a long time, started drinking macroswill a bit but only when I had pizza. Then I "discovered" Dark Schlitz, on tap, at a bar in Athens where I'd go for lunch. I probably would hate it today.
I was at some club dinner of some ilk and ordered a glass of wine to try and impress the girls there. As I recall, it came in like a jelly jar, I could barely drink it. I had had Boone's Farm and thought it was pretty good, better than beer. I then concocted a mixed drink which consisted of vodka and Tang powder, I called it a "John Collins" because that's my name, in part.
At one point, I started smoking a pipe, on occasion, mostly to try and impress ... somebody. I didn't like it much, fortunately.
My Dad would only eat "basic foods" so we never had spaghetti, when I first had it I thought it was better than sliced bread. I still do. As a kid, I HATED cheese, of any kind, smelly moldy disgusting orange stuff. In part this was because my Dad would buy this store block cheddar than just wasn't very good.
When I started liking wine, for real, I started with sweeter wines, then CA chardonnay, then milder cabs and merlots, then I had a long zinfandel run, then back to cabs, then French, then Italian, then some quasi exotic types like Sancerre and Mueller Thurgau, then Australian, Argentinian, Spanish ... then finally pinot noir and back to good chardonnays, so our tastes evolve, which is fun.