Elsewhere, I understand your thinking. I was in the same position, before I studied art. And it's something not easily explained. But once you get to looking at lots of other artists, you will find that each one is unique. It doesn't always have to do with something you have to like. It's a way at looking at art that is an expression of the inner artist. Some abstract paintings are difficult to look at. But usually it brings a mood or atmosphere to the piece. You need to look at composition, form, media used, creativity, uniqueness, expression and overall experience of the artist.
I saw a 'painting' once that wasn't a painting at all. This artist glued his paint tubes and paint brushes to the canvas rather than using paint. The overal composition was intriging, and unique. It was something totally different and hadn't done before. The 'painting' wasn't large, but sold for 85K
So each artist is different, and you don't have to like it. It's not about that. It's about an expression of the artist and you look for; What is the artist trying to express. Once you sit down and take a long and good look at the piece, you will find many different features throughout his or her work.
Puternut