...
Let's say you have $300 laying around.
You could either buy a ps4 with it, or 1.5 Bitcoin.
If the 1.5 Bitcoin loses all value in a year, well too bad, now you don't have money and don't have a ps4. It sucks, but it's not the end of the world.
On the other hand, if the value increases to say $750 or so, you could sell half a Bitcoin, buy a PS4 and still have a Bitcoin left for pure profit. Now when the ps5 comes you have some Bitcoin left to buy it...
If "lottery ticket" can be substituted for "Bitcoin," without substantially altering the gist of your argument, your argument sucks.