Think about all of the professions in the world that are needed but no one wants to have anything to do with them.  Who really wants to go see a dentist for his or her services?  Yet, without healthy teeth, the body cannot take in the fuel it needs to survive. 

So dentists help us stay alive, although their methods can be a bit painful.  Dentists are actually on our side because they want their patients to stay alive.What would the justice system be like without process serving? 

Anarchy!

Every defendant in the land would go free on technicalities or claim that they just didn't know that the plaintiff had any grievance.  We help the bad buys get punished and the good guys get justice.  We don't wear capes and have cool superpowers, but we are the good guys.