You have to decide NOW how many bitcoins will make you rich in the future because it's getting to the point where an upper middle class American or European can no longer buy a full bitcoin.
Anyone have any ideas how many you'll need to be rich in 2020 and 2025?
No one know the price bitcoin will reach but you can make some calculations lets suppose that for you being rich means having 100k dollars if you think bitcoin is going to have a value of 5k by 2025 then you need just 20 bitcoins at current prices you will need close to 25k to get them, personally I will wait since the ETF decision is coming soon and that may lower the price of bitcoin a little bit.