Whether it is Diablo or Borderlands, there are tons of games based on constantly finding loot, whether in a chest or not. The motivation comes from always finding some better weapon or equipment. That is a lot more exciting than a treasure chest which just increases one or more currency counters. Which is one reason why I am not really excited about hunt for treasure chests in Fenyx Immortal Rising: While you can find weapons and armor in chests, your find only affects the look and added bonuses of that weapon and armor. How much damage a sword or axe does, or how good an armor is, depends solely on some universal sword/axe/armor upgrade level, which is bought with currency. So the chests you find contain shards of various colors, and to make your sword hit harder, you need a certain number of shards of specific colors to upgrade. And then all the swords in your inventory hit for the same damage.

In short, you don't care much what weapons you find in those chests. You just accumulate shards, together with other materials that allow you to upgrade other aspects of the game: Number of potions or arrows you can carry, power of those potions, and so on, and so on. Your inventory screen tracks 4 materials for potions, and 8 kinds of shards and similar materials for updates. And for some of the shards you need to collect tens of thousands over the course of the game to upgrade. Finding a part of the shards that you need for some upgrade is not useless, but it is hardly exciting. You are missing out on the experience of opening a treasure and finding some useful epic weapon. So in a game I prefer finding spectacular items rather than currency.