It's the best way to share art and life updates. Totally better than Facebook for keeping up with friends and seeing what people are doing, seeing their new art, etc.
FB and twitter have too much "noise" in the form of memes and shared articles, so my friends don't write original stuff for me to read/us to discuss like they used to on those platforms. So Instagram has taken the place of the social network where people actually share stuff about their lives/art/experiences/etc, and that's what I want to see.