That is in no way "gambling" and is in no way analogous to cryptocurrency investments.
Everybody needs a home, and one way to have a home is to buy one. Investing one's savings in buying a home comes with the expected option that one can live in it indefinitely if one wants to. Fulfilling this expectation does not depend on others becoming homeless, nor on their home becoming worse, nor on others being unable to buy a home in the future.
On the other hand, nobody needs to invest in cryptocurrencies. Investing one's savings in cryptocurrencies is done on the expectation that they will increase in value at least until one can sell them at profit. Being able to do this depends on others losing out by comparison, inasmuch as one expects others to buy the same amount of currency at a greater price.
> Investing one's savings in buying a home comes with the expected option that one can live in it indefinitely if one wants to. Fulfilling this expectation does not depend on others becoming homeless, nor on their home becoming worse, nor on others being unable to buy a home in the future.
I don't think any of this is true. You buying a home deprives someone of said home and drives the expected price up. We have a homeless crisis in California because we are not building enough and everyone is treating housing like an investment ("It can only go up!", "This is an investment!").
Living in it indefinitely is also a pipe dream. You're paying taxes and fees that can increase or change at any moments notice if enough people agree. This requires the same consensus as fundamental algorithmic changes in cryptocurrencies. You can't bank of living somewhere "indefinitely" without agreeing that it's a gamble...nothing is guaranteed.
Regarding the "need" to invest in cryptocurrencies, I can kind of agree. Shelter is a need because it helps us survive more efficiently but one could argue investing/growing wealth should also make life easier to live if it works out.
Everybody needs a home, and one way to have a home is to buy one. Investing one's savings in buying a home comes with the expected option that one can live in it indefinitely if one wants to. Fulfilling this expectation does not depend on others becoming homeless, nor on their home becoming worse, nor on others being unable to buy a home in the future.
On the other hand, nobody needs to invest in cryptocurrencies. Investing one's savings in cryptocurrencies is done on the expectation that they will increase in value at least until one can sell them at profit. Being able to do this depends on others losing out by comparison, inasmuch as one expects others to buy the same amount of currency at a greater price.