>So what? Everything in life is a gamble and involves risk. You need to learn how to live with it.
Indeed, it's all about risk-management and in that regard gambling on debt represents a way higher risk, one I would not take, than gambling on savings you actually own.
With the latter, you at least have some control over the worst case scenario, while gambling on debt throws any control like that straight out of the window as debt can spiral out of control very quickly that way.
> The interest is often also tax deductible. It sure as hell makes more sense taking on debt for investing than it does taking on debt to (excessively) spend (as most Americans do).
Sure, it does make more sense but consumer credits are mostly short-term and as such somewhat more manageable for debtors with no real income security. Long-term investment credits, which usually have way better interest rates, are simply out of reach for many of these people because they lack the secure long-term income and/or can't make the required deposit.