Do we, as humans, only value that which we struggle for? The answer is most certainly yes. This is mostly because of the human perspective of value. The more we work for something the more we keep it in our grips. This is why a hard-earned medal for an athlete, or a big house or Ferrari or Lamborghini, or even a really good salary, is a very wanted thing. Because these are hard to get, they are more precious to us. So say somebody bought a new diamond ring, for example, they might be fingering it all the time, like Gollum and the Ring.
Why, you ask? Why do people do this? This is because of the rule of value. If you were out in the desert, lost, with no water. You come up to a random store sitting out there, and the shopkeeper gives you a choice. Take a backpack full of pure, white diamonds, or ten gallons of water. Which would you choose? The water, of course. If you choose the diamonds, you’re just going to die out in the middle of nowhere with a bag of diamonds, which will be completely useless. The water on the other hand, will get you out of the desert, hopefully to somewhere with water, which then you can restock and head back for the diamonds. In other words, the thing most useful at the present time is the thing with more value. Also, if there is more struggle to get something, it is harder to get, and thus has more value.
A couple of examples of this are that I once worked for a straight week for one toy, so I never let it out of my sight for nearly two weeks. Another is historical. The Revolutionaries worked years for their independence, so they valued it more. We nowadays don’t have to work, for it, since it’s hereditary.
So all in all, the more work we do for something, the more value that thing has. If a hobo works for months to get an old, used sleeping bag with holes in it, he will value it like a hundred dollars even if it only cost 15 bucks, not only because he worked for months for it, but because he probably needed it pretty bad. On the other hand, the regular businessman would scoff at the hobo because the businessman could buy it with no dent in his funds at all.