You eat what you kill.
They train you and push you to succeed and if you do well, you can make decent money.
However, the work environment isn't for everyone. Being on a roof in dress pants and shoes and while the sun blazes down or trying to measure in the cold isn't fun. Also, you will learn how many people actually live in filthy conditions and you may get jaded about - more... humanity. If you are already jaded, you will fit in well.
While compensation is good, their is no residual. - less