Going through divorce, please help me, any idea of value?

Yank the drive train out & put it on blocks.

Tough situation......You both being together since 17 sounds as if its time for her to spread her...err..wings. It happens when one dosn't have a chance to experience life before making a commitment.

Just be there for your children and keep an eye out for their welfare.
Take solace in the fact that she will most likely be buying ciggy butts and Xbox games for her new Bo.