Well, in my opinion, as long as currency is nothing but a claim or a receipt for money, it's inherently prone to keep losing value.
I'm not educated enough to answer the second question, so I won't pretend I can answer it.
It's not just a matter of liquidity. It's a matter of divisibility. You can buy a whole Bitcoin ($100K) and sell tiny chunks of it at the current market price. You can't buy a $100K house and sell tiny chunks of it at its current market value.
Yeah, but they can't sell individual bricks that they used to build the house with, to access the purchasing power stuck in the value of the property.
That comes with operational and execution risks. Selling a small chunk of your Bitcoin doesn't.
This is still THE BEST Bitcoin meme, to this day.

You want more dollars in your bank account.
I want more satoshis in my cold storage.
We are NOT the same.
If you're up 1,000-10,000% on your Bitcoin savings and want to improve the quality of your life, just go and do it.
You're not accountable to Bitcoin Twitter or anyone else.
It's your purchasing power.
Use it as you see fit.
I can buy $1,000,000 worth of Bitcoin and sell $10 (~10,000 sats) worth of it, if I need the money.
Can you buy a $1,000,000 property and sell $10 (~1 brick) worth of it, if you need the money?
Well, currency will always be worth less than the money it's backed by, simply because it's a claim on the money, not the money itself.
Moreover, currency is commonly issued via lending, which means interest will also be required. If I lend you the first $100 and charge you 5% per year, for 5 years, where will you get the extra $25 in interest to pay me back? You'll need to take out a new loan to pay back the old loan + interest, and so on.
Cash represents final settlement.
However, banknotes, which most people regard as cash, are not truly final settlement, no matter how much you believe they are.
Banknotes are liabilities of a central bank.
So, if you only accept "cash" because you dislike banks, understand that you’re asking me to pay you with an instrument whose function as money depends entirely on the central bank—an institution that could render that cash worthless
We are so freaking early it's not even funny

Money is economic power acquired via the expenditure of time and energy.
Currency is a receipt for money.
Those who work for and save in currency are doomed to fall behind those who instead work for and save in money.
Ditch this poison and cook in animal fats (tallow, lard, duck fat, butter, ghee, etc.)

wouldn't be surprised
New video is out 🧡
PSA: Don't let Ripple cripple your savings.
Bitcoin-only
Do you think GameStop is worth ~118,000 Bitcoin?

Saving in Bitcoin is a peaceful life.
You don't have to worry about what the pRoJeCt LeAdEr will decide to do next.
You don't have to worry about getting rug-pulled by insiders.
You don't have to keep track of what the latest narrative is.
You only have to worry about having enough fiat in your Bitcoin-only exchange account to keep your DCA going and making sure you withdraw to cold storage.