It's the same thing that drives people to want to experience sexual pleasure or have one too many drinks. We all want to experience the other, and to get out of our daily existence.
Loafe with me on the grass—loose the stop from your throat; Not words, not music or rhyme I want—not custom or lecture, not even the best; Only the lull I like, the hum of your valved voice.
You don't want modesty, you want humility. Humility comes from inside out. It says someone was here before me and I'm here because I've been paid for. I have something to do and I will do that because I'm paying for someone else who has yet to come.
We want to be famous as a writer, as a poet, as a painter, as a politician, as a singer, or what you will. Why? Because we really don't love what we are doing. If you loved to sing, or to paint, or to write poems, if you really loved it you would not be concerned with whether you are famous or not.