Why.
Why?
Let's say you mine Worldcoin and you have generated so far 1000 WDC. Today they are worth 0.3133 BTC (mcxnow quotation of 0.0003132 BTC) or 39.5 USD (mtgox quotation of 126.15854).
If we all work and believe in this coin tomorrow 1 WDC can be worth, let's say, 0.01 BTC. If that will be the case your 1000 WDC will be equal to 1,261 USD

If the work better they can be worth 0.1 BTC, and you'll have 12,615 USD.
We must work togheter.
You don't seem to understand the concept of pump and dump. If people wanted a mine and hold coin, they'd use an established coin like btc or ltc. World coin adds nothing innovative or established. You are left holding the bag my friend, I recommend you sell. For every one person who makes money on these new alt coins there's at least 10 people too embarrassed to admit they lost money and are left holding the bag.