To fear or not to live?

A thought is bothering me, and I'll be back soon to work more on it (after lunch;-))
Are we certain that fear is not the major parameter that ponders on our decisions about life, about love, about creative activities (as an antidote to "job" & "work")?
Yesterday, I would definitely and passionately deny it.
Today, though, living experiences made me so skeptical about it. As if I've discovered that till now I was wearing colored eye-glasses. And as if now, something (like a small rock) has broken them and I start to suspect that true life has a completely different shading of colors...

Bon appetit...