The real issue is that living costs money, doing stuff like writing/recording songs and touring takes time and money and they have tremendous opportunity costs, even bands which reach moderate levels of success and notoriety are unlikely to make much money or have an extended career. So if you like stuff support it with your wallet.
I very much enjoyed the Pretty Girls Make Graves show I recently attended, and they're breaking up presumably in part because at some point you have to get on with your life.
