Probably because it involves exposing yourself to other cultures, going well outside your norms in many areas, and basically getting a huge amount of perspectiv

Probably because it involves exposing yourself to other cultures, going well outside your norms in many areas, and basically getting a huge amount of perspective. It's educational in many ways and considered valuable experience. That said, I wouldn't bother if you genuinely don't enjoy it (although personally, "man up" is a common mantra on my trips...)