Dependability

Something we need in order to survive. If people don't depend on us then we are discarded. The world right now works thanks to this. Farmers provide us food, scientists improve our life conditions, retards entertain and we all have a happy and lively circle. If any of us aren't dependable, then that means that we are thrown out of this. And the only way to live outside of this circle is by either good luck or someone whom we can depend on even if we ourselves aren't dependable. It is almost everything. Take that trait away and we can't be doctors, merchants, editors, writers or anything else. It's simple.
Trust = Opportunities with it's rewards while.
Trust = A stagnant life in which you can't ever hope to advance.

Legally that is.