Because I assumed you'd understand the depreciation of the asset is a lot less than the appreciation on your investments or cash that you can do in the other scenarios. The entire point is its offset. Also that's not a business asset description, thats just normal life??? WTF buys a camera and doesn't offset some of the cost doing their mates wedding? You're not thinking rationally if you think using the credit system is comparable to a roulette wheel. You control its use. You can just clear the debt if its interest free, its not grown or changed. The credit system is designed around returns for people who can't afford something at all. It's utterly predatory, but if you financially are entirely above the risk of paying interest its just a lot of flexibility in preserving your cash capital.