practicality?

A friend of mine were having a conversation on what is necessary and what isn't. In fact, there are so many things that aren't necessary in our world that we'd be left with virtually nothing. I live life through unnecessary things- candy, dessert, music, my wonderful blackberry and sports. Looking at beautiful things that have been constructed merely for beauty like status and paintings will never be necessary but they're nice to have and incorporate in your life. I believe that a lot of the little vices that we have in life are the things that keep us sane and happy.