Here are a couple of my favourite songs that I think put it well:
https://m.youtube.com/watch?v=OvMoRVrqx_I
http://www.dailymotion.com/video/x2z46va
Here's one of my favourite stories about the same thing:
https://www.brainpickings.org/2014/02/25/margaret-mead-meani...
Sometimes it can be fun/stimulating to consider the nature of existence, but if it isn't taking you to that place, why do it? I half remember a story about a famous mathematician who drove himself mad trying to solve a problem regarding infinities, to me this is a great example of the difference between intellect and wisdom. If you're driven to understand something, I'd suggest that tells you something that's interesting in its own right, so to turn it back on you, why do you want to know?