If you do comfort with no effort, you end up being bored. Low energy.

If you just wanted fish, you would go to the store. However, fishing is fun by itself.

If you wanted to get somewhere you could drive. Or be driven. However, walking, biking, or running there is more memorable. Sailing even.

That becomes where the journey is the reward.

The human body has a lot of compromises made to it in order to be able to walk long distances with ease.

Consider travel and locomotion.