we all know that Bitcoin is so broad that coming to crash is so minimal, but the big question is what if it crash?
it is so obvious that majority of the world is totally dependable on Bitcoin.
but I think that in anything we do we should try as much as having a plan b, there is nothing wrong if we invest in other business as plan b.
for example I have seen most men who are international staffs in an oil companies taking a huge amount of money at every end of the month not knowing that nothing last forever more especially money.
so am on the opinion that every Bitcoin miner should have a plan b of investing in other business to avoid the story that touch.
Op your advice is good but the possibility of bitcoin crashing is slim, Bitcoin has gain much publicity and awareness more than any monetary investment and looking at it a feature people will always want to go into bitcoin investment because of it's profit ability, bitcoin give you peace of mind as an investment once you have it in your custodian wallet, you wait for a number of year's to reap your profit as a hodler.
I know for sure that many people don't solely depend on bitcoin because is just am investment and one should have other hustling too that can fetch him money instead of depending on just one venture, there should be versatility in money making venture to avoid being staged at a point.