cOoL MoDeRn aRt
In my opinion, modern art is something that sparks the thought "I could've done that too!" (but you didn't dipshit!). It's not so much about the execution as it is about the idea itself, so it doesn't normally take much skill (there are exceptions tho). "Good" modern art like any other is a subjective term - for me it caries a very unique sensation and it's often quite funny. It's something that goes all the way out of the box and then takes a shit on it... yeah, that's a good analogy.
I'll just get to the point now