From what I've seen of the world of culture and art... much like everywhere else... nobody agrees on anything. Michelangelo's David is excellent... but it's also very realistic. It's a person that's carved to look like a person and it does that extremely well. There is obvious skill and artistry and the desired result is perfect. Talking about people like Picasso and Van goh? There gets a lot more subjective as to what is and is not 'masterpieces'.
But yeah, I think everyone likes David.