The one quality Crosby has is that he never whines about the holder, the hold, the weather, the field or anything else.
When he misses, he will tell you he missed.
He won't whine about the ball being placed "on a yard line which is a little slicker than the rest of the field" like Longwell did.
Kickers get better with age (to a point) and the Packers believe Crosby is improving.
In 3 years who knows how high kickers will be paid. The Packers are gambling on price and Crosby can be happy with the security of a 5 year deal.