There is nothing wrong with credit per se - providing it is used sensibly. Credit oils the wheels of industry, finance and governments, and how many people would be able to afford to buy a house outright without a mortgage? Without it, we would be living in a very different (some might argue - better) world. However bad credit which is unaffordable is a different matter.
The PCP schemes are just a finance scheme whereby the buyer is only buying / financing the depreciation on the car, hence the low payments. They are designed however, to generally leave some equity, in the vehicle at the end of the payments (ie the trade-in value of the car is generally higher than the balloon payment or GMFV). This gives an incentive to use this equity as the deposit on a new car, which again is not a bad thing, if you like to change your car at 3 years, thus having the luxury of always driving a car under warranty whilst having fixed monthly outgoings. This appeals to many people who just view a car as a tool or commodity and are not 'petrol heads'. If this is all that bothers you, then it is of no relevance whether you actually own the car or not? There is no coercion to buy another at the end of the deal - I have just had a 19 month (0% interest PCP scheme) come to an end and the letter from Fiat Finance offers 3 simple choices: 1) Hand the car back and walk away 2) Pay the balloon and keep the car 3) Visit any dealer for a valuation against a new car.
I used the scheme as I went to buy the car outright for cash, but was offered the PCP, which made sense as I was able to keep my cash in the bank earning interest whilst borrowing money from Fiat at 0% - simples!
I think that the reason there are so many 500 owners using PCP's is that effectively this has been Fiats method of discounting the 500 via finance deals and not cash discounts on list price. This has been good for all 500 owners as it has helped maintain strong residuals, however outright cash buyers are effectively subsidising the low rate finance deals. The Panda on the other hand has always been available with good cash discounts for outright purchase and is less expensive generally too.