It's the event that is the reward. It's exciting and challenging and if you succeed that is the reward. For example: I have two kids, I never wanted kids but it happened. I hate being a father but I love my kids. There are people that actually adopt kids, because they want to make a difference, or they like the challenge. personally, I think it's insane to want more kids, but for others the reward is the challenge.
If everything was easy, there would be no challenge and you would not fill fulfilled. In a sense it would be boring. Life is a challenge, and the more work you put into it, the more fulfilled you feel.
Also, I think the mechanism was designed for multiple people to work together. Too many people try to do everything solo in this game. This game is a multi-player game people. It was meant to be co-operative. Like a guild or a just a group of friends and a common goal. I bet doing a pirate hunt is a lot easier when two or more people participate.