You possibly miss quite the point of what art is about. Yes, technique is a part of it, and Michelangelo's works are great, no question, but don't diminish some

You possibly miss quite the point of what art is about. Yes, technique is a part of it, and Michelangelo's works are great, no question, but don't diminish something just because you don't see the point. See, you were "astonished" by Michelangelo's work, you felt something about it, the realism and the details of the carving aroused something in you, emotions. People can also feel powerful emotions from other types of visual arts - there are more nuanced things, like colors, shapes, lines and things that you can't describe but only experience, partly subconsciously. Go see a Rothko painting, for example. You can even naively tell me that it's just some colors and anybody could paint it, but no, stand there and try to experience what that raw visual data makes you feel, without trying to find some logic.