A person doesn’t normally enjoy breathing.  Normally, breathing is neither a reward nor does a person find it rewarding.  People can certainly use these words to describe breathing, but they falsify rather than reveal reality.  Reward,  enjoyment and similar expressions all suggest that there is an activity of some sort, and then, separate from that activity, a response or reaction to it, an appreciation of it.  They lead us to think of something like breathing on the model of what happens when you inhale a cigarette or take a sip of wine, and your action is followed by a release of chemicals in your brain that manifests in a certain sort of somatic sensation that our physical body welcomes.

But that’s what happens when you smoke a cigarette, not when you breathe, and that’s why it’s misleading to use such language when talking about respiration.

Breathing is simply part of the normal operation of the body.  Cut off the oxygen supply, and of course the body experiences distress, but the return of oxygen is not enjoyment – it’s relief and a return to normalcy.

Similarly children do not enjoy play, not do they like it, and for exactly the same reasons.  Playing is the normal state of the child, part of the normal operation of the child.  Unless they have been incapacitated in some way, all children play, just as all people breathe.

The aim of the Christian disciple is to become as naturally harmonious with God’s will as our bodies are with breathing and children are with play.  The goal is not to enjoy that harmony, or to like it, and certainly not to find it rewarding or to be rewarded by it.  Those are simply the wrong categories of thought to use it thinking about our relationship with God (though they certainly are commonly used, perhaps more commonly than any others.)