I don't understand why this bothers you so much. If you think this is dumb don't invest, it's really as simple as. Sometimes it truly feels like people here are sour because they "missed the boat", and are now hoping for BTC to crash again so they can go "see? I said it was dumb". I don't want to accuse you of this, I just don't understand the problem otherwise.

Also, it's 18 million BTC, not billion. You're right though that it's close to a trillion dollars market cap, so I assume that was just a typo.