I agree with your points here, yet investing in bitcoin is not guaranteed to be profitable in the future, even though bitcoin is amongst the best (if not the best) place to put time, energy and value... but yeah, everyone is responsible to make their own choices regarding whether to get into bitcoin and how much to get into it.
Yes, there is no guarantee of profit, no one can guarantee profit. But Bitcoin has proven in the past that people who have invested in Bitcoin in the past and held on for the long term have benefited. Bitcoin has survived for 15 years so it is not wrong for us to expect even if there is no guarantee of future profit, so we can expect a good profit.
Now if we think about risk, then risk is involved in all cases. Now we have no guarantee of our own life, we can die anytime, so to achieve something good in the future we must take some risk. In fact, no person could succeed without taking risks, those who succeeded must have taken risks. Now there are different sectors to invest in, among which Bitcoin can be the best, one can expect to make good returns if one invests in Bitcoin and holds long term. Now investing in Bitcoin is everyone's personal matter. But we should try to find the best place to invest.
Don't sell, just buy.