To a degree,we need to eat,breath,we have survival instinct etc... on a very basic level yes.
The difference between human beings and animals is that we can control our impulses,we have the capability of telling right from wrong,depending on level of personal wisdom,we can predict the consequences of our actions and so on.
Attraction is indeed a very powerfull force however it looks like you`re assuming the bond between Quinn and Riona is purely physical,while attributing strenght to that type of bond,you are also assuming it can be broken by MC`s magic johnson,which would mean the bond wasn`t really strong to begin with and here is where the argument falls apart...