But it is dumb to buy any consumer electronics on credit. If you can buy it outright, do it! If you can't, well maybe iPhone is not for you.
Your statement is profoundly absurd and very glib. Read again what you just wrote. "Buying any consumer product is dumb on credit."
How many customers or forum members for that matter, purchase an $1,100.00 outright for an iPhone, maybe for every family member when they upgrade? Not many.
Now, I purchase my iPhone every year outright, being its a tradition of mine. But to say an iPhone is not right for you because you use credit to purchase shows you struggle with ignorance.
There are hundreds of thousands of customers who finance consumer electronics everyday because it's an appropriate financial solution for their lifestyle and in there budget. As long as the customer makes the agreed payments, then they are building credit and obligating to the terms.
Even carriers are only offering upgrade programs with two year contracts being obsolete with monthly installments, which the customer can trade in at a different time for the latest device.
Maybe someone does have the financial means to pay for an iPhone in full, but they choose to use the advantage of the upgrade program, because it's convenient, managed appropriately, incentive promotion, earning credit and or credit card points through the company and so on.
I think it's very clear you have a major shortcoming by your statement.