BSX, your premise is interesting that humans are afraid of the truth and it is that fear that holds us back; I'd offer the counterpoint that it is the fear of fear that drives us forward.

And as far as lies go, without a full half dozen I'd never get out of bed. Lies are the small accommodations we grant to ourselves, and others, just to get through the day.

"It's ok being bald."
"The bride's ass isn't getting huge."
"You look nice today."
"thank you, you're welcome"

Lies are the social grease that keep the wheels moving and it's the fear those wheels will grind to a halt that keeps us on the hamster wheel.