I think we got sidetracked on debt, and didn't look at this specific situation. I think there are valuable uses for debt. Buying a house, taking on loans for a business [investing in yourself, essentially], etc.
But I learned a valuable lesson right out of college. I financed a motorcycle. I owned that motorcycle several years, but I wrecked it on a racetrack [where I couldn't make an insurance claim]. I owed $1900 still on the bike, but couldn't rationalize continuing to make the payments while also having to drop money into it to make necessary repairs just to make it rideable. So I sold it for $1500, ate the remaining $400 out of pocket, and haven't owned a bike since.
The lesson? Don't finance toys.
Debt can be used for some things, responsibly. But if you are talking about toys, i.e. a motorcycle, or brew bling, or anything else you don't NEED, you shouldn't be using debt to buy it if you can't afford it out of pocket immediately.
(There are possible exceptions for some 0% stuff, or credit cards with rewards if you pay them off in full each month, etc. I.e. if you *can* afford it out of pocket, but there are financial reasons to use the float, then it can make sense. But it sounds like OP wanted to use the 0% "pay it over 6 months" thing because he doesn't have that kind of cash on hand.)