We need an economy that isn't denoted on dollars or euros or similar. Bitcoin is a step towards that. And all the PoW "waste" is worth it. (Though I wish there was a better alternative that's more environmentally friendly while still decentralized like PoW so PoS isn't a good candidate)
But note "assets" and "savings accounts" are not the same thing, and confusing the two is pretty bad.
Gold -> Good, and Bitcoin is like Gold in many aspects. While it doesn't have Gold's history yet, it has a few other qualities like easy transferrability and divisibility.
Other assets -> Like? ForEx is at the mercy of issuing government (just ask Russia who lost ~300B$). Land can be seized if it's outside one's jurisdiction.
In general, Bitcoin (like Gold) is a great asset to park some fraction of your wealth as a hedge against geopolitical risks.
If I put money in my savings account, I can use it tomorrow. If you put money in your BTC savings account a year ago, your BTC is worth less than money under a mattress (or in a modest yield savings account).
You may want to invest in BTC, and that's absolutely fine! But it's not a savings account.