What's the most important thing that you've learned about life?

[fkusumot]

The Ghost of RubangB said:
"What am I? A speck on the penis of an alien?"

 The question is "What's the most important thing that you've learned about life", not:

"What's the weirdest hallucination you've had on an extreme salvia divinorum trip"

Still, I must say that I have extreme respect for your phallacious insight.