Well, there would be several things to qualify here. Firstly, if your bitcoin holdings become important, consider having them in several HWs or the system you use, as well as considering multisig or other systems for each HW. The other would be, as the fiat price rises, cashing out and buying things that you can't lose just like that, tangible assets for example, such as real estate, land, even gold, which is much worse than bitcoin but is a way to diversify and protect yourself against real boating accidents.