Vanity can easily overtake wisdom. It usually overtakes common sense.
Religion is never the problem it's the people who use it to gain power.
Desire is individual. Happiness is common.
If the choice is between doing something supercool and having no one hear it...
I think the way we talk about cancer has really evolved. I remember the way my grandmother used to talk about it like a death sentence no-one would even mention the word.