I am also pretty conservative with money. I never buy anything on credit that I could not pay cash for. With the exception of my home. But I will take a car loan at 0.9% and keep my money invested in higher returns. The way I see it, the government and the Fed is making it foolhardy to do anything but borrow your way to prosperity. The fed has pushed interest rates to zero so there is no risk free place to keep your cash. On the other hand they have made it possible to borrow money at 3.5% for 30 years on property. Now, we all know inflation will come as a result of this reckless fed spending. How should we protect ourselves? If I borrow money today at a very low interest rate that is fixed (this is the key), I will pay it back in the future are a highly discounted rate due to inflation. Inflation reduces the debt. At the same time, the asset purchased with debt goes up due to inflation. So you win both ways. Meanwhile the income produced more than offsets the debt payment (the other key). These low interest rates cannot last forever. It is effectively a government subsidy, one of the few that I am eligible for! I'd be crazy to not take it.
Ramsey preaches to the generally financially illiterate. Those that use 18% credit cards to pay for shoes are not investors. Investors have to think differently.