if bitcoins price would drop as low as $1 maybe theres problem but buying lots of coins would be the best decision as you said since bitcoin price would increase back and if it happens then all who bought bitcoin would gain profit or even make them rich.
If it will gain back its price then it is sure profit. But what if it will just become another altcoin that dies. When you go to Yobit you will see a lot of coins that are created started with a high amount then in just a week dies. Scam or not if there is no supporter it cannot gain a hike.