Total agreement. There's no reason to take on unnecessary debt to get a car just because inflation is at 1.6% and I can get a car loan for 2.6%. I don't see the point of taking a loan to invest the money. I don't like being in debt and while I can see taking on some debt to get a house taking it on for a car doesn't seem wise. If you're buying a car that cost enough to even consider taking out a loan to buy it the damn thing is probably still on the heavier side of it's depreciation and is probably losing 15% of it's value a year still.Sure. But in terms of financing a car 10k is not a lot. I wouldn't finance a car anyway. Doesn't matter the threshold. I buy what I feel I can afford outright. Owing others money isn't something to brag about period. Simple is sweet. Debt free, emergency fund, investments in solid funds/real estate etc. is how I like it. These banks ain't stupid man and I'm not out to prove I'm smarter than these banks finessing people into thinking debt is a good thing for financial stability. Play with fire enough you'll get burned.
If there's a job loss/disability/hardship the last thing I wanna think about is who I owe money to. Like I said debt=risk.
We're really borrowing money to buy something that's losing 15% of it's value a year so we can take the money we would have used to buy it and invest it? If you buy a car at year 4-5 yeah it might require some maintenance but the depreciation is really gonna slow at that point and it's probably fallen to a dollar amount that anyone with a decent job can save several months and just buy it cash. If we buy it before that 4 year mark the question becomes will the depreciation of the car and interest combined outpace the growth of the investments?
Now, I know you don't know what you're talking about 
