Distribution of wealth actually matters very, very much.
Politcally and socially, sure. Economicly or mathmaticly, not so much.
You're missing the point. Credit availability is a problem for whom? I'm not trying to be a jerk, I'm trying to be a better economics professor than you apparently have been exposed to thus far. The classic method involves asking questions of the student, in order to lead them to a deeper understanding of the topic. Economics is more than mathmatics or statistics, it's people, so both the who and why does matter.
Sure; but you dont have to save in fiat currency: buy gold; buy stock; buy bitcoins; buy land, start a business.
Credit money isnt meant to be the best possible preservation of wealth and that its not is therefore not in the least a problem. Its by design. The most important goal of a monetary system is not to preserve my wealth, it has to do enable our economy. And thats what credit money is much better suited for than bitcoins.
"The curious task of economics is to demonstrate to men how little they really know about what they imagine they can design.”
-― Friedrich von Hayek
Just because that was the idea, son, don't mean that is what actually happens. I question whether or not that was the true design, or simply propaganda to cover the scam, anyway.
Before bitcoin, you truly found nothing to invest your money in?
Before Bitcoin, there was nothing truly detatched from fiat currency systems to invest into. You betray your own though processes; as investing into regulated industries is investing into areas wherein the government has deliberately limited your choices, and then taxes you upon any successes that result despite them. Even investing in gold is taxed here in the US; both up front (sales tax) and on the back end (capital gains tax). The best way that I've found to invest without taxation is to use a Health Savings Account, but governments limit my choices there in other ways, and there is zero chance of fiscal privacy regarding one of those accounts. There is also zero chance of investing in anything not dollar denominated. It's acctually illegal to invest such funds into physical gold, for example. An ETF, sure; but not actual coins.
You are completely misreading me. Im neither risk averse nor anti bitcoin; I just acknowledge what bitcoin is and what it isnt: A viable universal alternative to credit money; it is not: Something like ripple OTOH perhaps might be one day.
You say that it's not a viable alternative to credit based fiat. Okay, that's your opinion. What is it good for then? Again, why are you here? Are you trying to convince us, or yourself?
Think, young man, think.