My preferences haven't changed too much. I thought I didn't like wine when I first started drinking it: I was in high school and about to be a short-term exchange student to France. Since I was also going to visit our French relatives, my parents wanted me to be prepared if there was wine at dinner. I think they and I had visions of me trying it for the first time in France, making a horrible face, and thus bringing tiny petty shame on the American family's escutcheon! My parents can't drink red for nitrite migraine reasons, so they started me on the kind of dry whites they liked. Which were not my favorites: I really took training myself to drink it politely.
Then I got to France and every wine I was served was red or rosé, and I loved them! Such a relief.
I'm less mad on rosé than I was then: they just don't seem very complicated, though I still enjoy it especially in summer. But red wine continues to be my favorite, especially merlots, malbecs, and garnachas. My taste in wine is similar to my taste in coffee: dark, full mouth-feel, preferably not too bright, earth and berry notes a plus. I do also drink Pinot Noir because, hi, I live in Northern Oregon ;)
I'm the only one in our household who drinks wine, so I have ended up buying mostly European wine, as I can get a wine I really like for much less money that way! The consistency, particularly in French wines, is very good for buying simple everyday house wine. One of my French relatives explained to me that he would never buy a single-grape wine at home: over the decades (at least) each wine region has figured out exactly which varietals grow well there and what ratio they blend well in. Blending to get the perfect taste profile is a huge part of their vintner craft. I never knew any of that, but it helps explain why I have a very easy time finding consistent, pleasant wines from France once I figured out which regional types I enjoy!