If I had a beef with bitcoin is its lack of portability. Now I know many of us a technical bent and in your head you went "what do you mean crazy man?!? I can use it on linux or windows or android! " well you don't understand the larger meta portability I am talking about.
I cannot put a dozen bitcoins into my pocket, hike into some remote area and trade them to the locals for goods and services. I cannot physically move a bitcoin and control who has access to it. I look at things like the bank seizures being done in cypress and wonder, what would I do if my bit coin account was seized by a goverment or entity and I needed to get my funds out. They can claw them back from anywhere even if I move them. With a physical currency I can pull my cash and walk it across a border, or if the currency is not fiat, bury it like pirate treasue and then dig it up later.
There is a reason people go looking for pirate treasure, and are excited with the gold and silver currency in it, no matter what goverment issues it. No one would be excited to find a chest of Zimbobwian paper dollars, no matter the size of the chest. Bitcoins inability to created into a form that I can break the traceable ties from disinterestes me in its acquasition. I cannot walk it to somewhere safe, I cannot hide it in my mattress, I cannot get it past goverment regulation of the internet (what happens if your country blocks access to bitcoin wallets and servers). Bitcoin is the ultimate seizable currency and I want nothing to do with that.