Any obsession is unhealthy, but being a fan of something is usually fine. Think of this like sports or foodies. Some healthy insight of conversation is fine.
Rather than just focussing on what you enjoy, consider asking them to explain what makes for a better wine. Try to learn a bit, to appreciate this from a torah perspective. Hashem gave us these gifts, let’s see if we can channel them. I have often found that showing that I am interested in what others are interested in, will open them up to things that I may want to share.