What range would you use and why?
Any asset that can give a yearly return of 20% or above is a very good asset, and I think Bitcoin is such an asset, if bought and not traded. However, one should consider the bearish cycle of Bitcoin whenever they are planning on the yearly return. If care is not taken, when the investor buys at the selling year, then sorry, they might need to wait for at least 2 years to return in profits, depending on the striking price.
Also, the amount one could earn yearly depends on the smartness of the investor. The investors who prioritise buying a significant dip rather than relying on random buying or DCA would make more money in Bitcoin, and their 50% earnings in some years will be almost guaratteed.
It is safe to assume that I do not trade. I have limited needs and I have them well covered.
Perhaps at this point I am so wired into that "limited needs" part that I probably would be psychologically unable to overspend or buy luxurious stuff that I do not need. So... let's put it this way: I am trying to create a fund for super-big emergencies or to pass on to my grand-grand-children.