I too thoroughly enjoy it. I also laugh a lot while watching it. More than while watching Adventure Time, to be sure. But I have to take points off of Rick and Morty because it is very misanthropic, and I feel their relationship is too abusive. I know thats just me being myself, but I just can't watch too much of that stuff. It puts me in a funk. If there was an outside observer who commented on the inappropriateness of the situation, (ala the Office or Curb) I can normally absorb those shows with less stress.
But yes - it has probably the most laugh per ep after Bob's Burgers
If you want to see Justin Robilard at his peak, look up "House of Cosbys" and Channel 101