I agree. If you look at the bitcoin you can increase your bitcoin value instead of usd as of the moment so when the bitcoin price increases again you can earn a lot more money.
Yes it's the best, as far as i know. Although bitcoin had dipped many times but, still it has a high price or value compared to other coins.
The point was that people are not looking long term and they are just focussing on day to day price changes and then complaining because they think they have lost their money.