I used to hold the same opinion, until I studied and sat my WSET levels 2 and 3. Now I disagree. There are concrete and objective quality indicators in wine, w

I used to hold the same opinion, until I studied and sat my WSET levels 2 and 3. Now I disagree. There are concrete and objective quality indicators in wine, which independent observers will reach the same conclusion about (without communicating). Broadly speaking you can class those as complexity, intensity, balance and length. It's entirely possible to have personal dislike for a particular wine style, yet score individual examples of it highly across those 4 areas. Equally it's possible to have great personal enjoyment of wines that don't score well. Personal taste and quality are separate dimensions, and appreciation of the latter is a coachable skill. I recommend anyone in doubt to take a decent wine course and see for yourself.