Taking a loan to invest in Bitcoin is very wrong, why would you take a loan to invest in Bitcoin knowing fully well that Bitcoin investment is not a Ponzi scheme, I have a friend when he started Bitcoin investment as a newbie he went to take a loan and then used the money to buy Bitcoin and hold, he was thinking that before the expiring date given to him to repay the loan Bitcoin would have rise and he will then sell and make profit there by paying off the loan, but it didn't work for him like that, he had to sell off the Bitcoin he was holding and sold some of his property in other to pay off the loan together with the interest,
Bitcoin is an investment that we shouldn't rush into just to make quick money, if you want to invest in Bitcoin you need to have a source of income and then start buying Bitcoin little by little using the DCA strategy, if you don't have a source of income you don't need to invest in Bitcoin because if you do you may be tempted to sell it off and use the money to settle your bills. The only reason an investor can borrow or take loan is when he has used up his backup funds which is emergency, reserves and float funds and instead of dipping hands into your Bitcoin investment you can take a loan as long as you have a source of paying back but if you don't have a source of paying back then it is advised to dip hands into your Bitcoin investment.

Of course, no one should get a loan with an expectation that they will be using proceeds from their "gainz" to pay back the loan.

There are such things as smart loans, and there are a decent number of folks who know how to use debt and/or leverage to put themselves into a financial status that they may well not be able to achieve absent their use of debt in smart ways.

Sure, debt is a more sophisticated instrument as compared with straight-forwardly living within your cashflow, and it seems to me that the best kinds of debts and/or loans that have already considered ways to pay back the debt, and without relying upon the appreciation of the investment in order to accomplish paying back the loan, and surely there are also folks who are able to muster up way more favorable loan terms than others, and it may well be neither unethical nor imprudent to personally profit from personal credit and/or even collaterally-based credit that is relatively well thought out, accounts for the costs of the loan(s) and other applicable terms.

So many guys have been mentioning (and emphasizing) the need to live within your means, and surely there is nothing wrong with making sure that you can walk before you run, yet there is also nothing wrong with both identifying when you can run and employing that tactic in order to put yourself into a much better place (and perhaps even a place that you could have never had achieved) absent employing the running card... and for sure, there can be ways that such running card can be deployed without devolving into trading, excessive margin, gambling, shitcoining or other overly risky practices.

Surely, the use of loans and debts is not a basic technique to be applied without weighing costs and benefits, but it is a technique that can both be learned and employed in relatively risk-free (or risk-minimized) ways.  Admittedly, there are a lot of folks who neither know how to employ or to manage debt, and who should not be using debt based on their own skills and/or circumstances, yet the mere fact that a decent number of folks do not know how to use debt or they employ debt under the wrong kinds of circumstances, that should not cause debt to be eliminated from the list of options that someone might well be in a good position to reasonably deploy.