You will only know the value of the coins you are holding if you made much effort to earn it. The same way goes to bounties, if you have made much effort to complete the task required to get such a small stake then you will realize that it is never easy to earn such token/coins. By then it is on your decision to sell the coins/tokens you have whenever it is available or just hodl it waiting for its value to increase.
You work might be worth 100$ when the campaign ends, but if you just let the coins there in your wallet, without touching them, and check t back in 10 years, you might find out that your work could be worth more than 100$, maybe $10000.
Now, imagine what would happen if you are rewarded 100$ for 10 campaigns, you could make $100.000 just by waiting for the price to increase, your work beeing far more valued that it seemed at first.