It solely the decision of any investor to decide how much he is willing to invest in Bitcoin or any other asset. Bitcoin have high return proportional to the investors Level of Accumulation of it (stash) which is guaranteed in a long run, it simply a matter of discipline, if the investor is disciplined there is nothing that can shift his focus.
Bitcoin's price performance is not guaranteed in the long run to go up - even though many folks (including myself) invest into bitcoin based on presumptions that it is more likely than not to go up in the long run... so each of us needs to establish our position size in accordance with a variety of factors, including the factor that BTC's price is not guaranteed to go up.
I agree with you and It is not known exactly whether there is any reason behind the increase in the price of Bitcoin, but we can imagine that the price of Bitcoin will increase constantly. While the price of science is likely to rise further from its current position, various studies suggest that Bitcoin will go higher than its current position. We can say for sure that Bitcoin will change in the future and we will see it. As the price of Bitcoin is increasing and its popularity is increasing day by day, we can definitely say that in the future people will buy more Bitcoins and the demand for Bitcoins will increase. The price of Bitcoin will increase mainly because there is no new supply to the market, but because Bitcoin is limited, the number of Bitcoin investors will increase and the demand for Bitcoin will continue to increase.
My opinion.