When buying crypcurrency, Buffett said, "You do not invest when you do it. You are speculating. There is nothing wrong with that. If you want to bet others will come and pay more money in the near future, it's a kind of game. But that is not investment. " Are we participating in a game?
Do you think people will make investment with bitcoins if it is not good investment? Of course not! People are continuing to buy bitcoins because they know that bitcoin investment is really worth it.
Practically true. Investing at $7K and now reaching $9K within just a month is a great profit making leap which cannot be achieved anywhere as an investment platform. Irrespective of how you regard Bitcoin investment, it is still creating millionaires out there each day.