What could cause a great artist to just quit for no apparent reason?

As people, we like nothing more than a bit of attention – why do you think social media is so huge? Like it or not, each of us is on some kind of ego trip – we wouldn’t be human otherwise! However, as artists, we can probably be a little more sensitive than most and get dejected when we’re not receiving the attention we believe we deserve. You probably know the scenario – you’ve spent hours finishing a painting, but only one Facebook Like? Only a handful of Re-pins? What’s the point?