$1 million per bitcoin is hardly even a very high price. It is around the market cap of gold, and many of us should realize that bitcoin is much better than gold - perhaps 1,000x or more better than gold.
Funny enough people refer to Bitcoin as digital Gold but then underestimate it's value not knowing it has the potential of being improving far better than Gold in the future, that alone shows that they don't really understand the phrase "Digital Gold" as used by them, if only they know the potential Bitcoin has in the future I bet lots of people would take their investment on it more seriously, the people buying aggressively are wealthy people, they're fucking rich yet they keep buying than sell, it shows that they've pictured what the future with Bitcoin looks like so they're using their present wealth to acquire more in the future, that's enough to convince anyone concerning the potential Bitcoin has.
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In fact, those who think like this are far behind and regret not having invested earlier. You will see that such people only focus on the past, they do not think about the future, it is wise to think about the future. If they had thought about the future of Bitcoin they would never have thought of Bitcoin as expensive. What was the price of Bitcoin in the past and where is it now? And more will increase in the future that's for sure. Investing in Bitcoin doesn't need to focus on the price, you need to plan to hold the investment for the long term. Now Bitcoin has proved that holding Bitcoin for long term is definitely profitable. So don't dwell on the past, focus on the future and invest with long-term plans. And you don't need to buy 1 bitcoin, you can invest in bitcoin in DCA method according to your ability.
Even though bitcoin is amongst the best, if not the best of current investments, Bitcoin is not guaranteed to go up in price in the future.
Yeah, due to it's volatile nature one shouldn't be very sure that it would always improve, there's no guarantee concerning that, which is why we can only speculate what the outcome maybe and hope it does better in the future just like it's done in the previous years, well that doesn't change the fact that it's one of the best investment anyone can think of.