I agree with brent in this one.  It is 
definately 'good' to pick up hitchikers.  It
is 'good' to trust strangers.  The world would
be a better place if we all showed a little
bit more trust of strangers.

Is it dangerous?  Maybe.  But, doesn't it make
it that much 'better'.  

Isn't risking your life in order
to do a good deed a 'good' thing?