I think by 2030-2040 we will see the total circulating supply almost cap will the rest of the supply will be just mine until the supply around 2140.
Yup. By 2036 ish 99.2% of coins will have been mined. That leaves over a century to get the final 0.8% which makes it borderline negligible which means we'll have a pretty good idea of what it'll be like within our lifetimes.
Even within 10 years we'll know what the trajectory may look like. It will either be dead and long since superseded or on its way to much bigger things. For volatility to look vaguely non bonkers it needs to be much, much bigger than it is now and in many more pockets.
I really thought the last bubble would demonstrate less madness but it was still capable of shedding a grand in a day.