Personally I see PCP as a good way of managing liability in the off chance that things go seriously wrong with the car. Always better to have a finance company on your side than be Joe Public, consumer rights or not.
Over the years PCP has worked out very well for me, taking profit to the next car every time and making the overall cost equivalent to owning one. In 8 years I've traded up from a diesel focus to the S3 and now the RS3, via a couple of A class' and a 370z Nismo taking equity from one to the next and putting in minimal deposit. I do track the curves though and get monthly data from my father in law who's a Dealership Manager which has helped me sweetspot the swaps. Sounds data crazy, but that's my day job so it's second nature.
Plus it frees up capital to invest and make more than the interest on the car meaning when I'm old and grey I'll be able to buy my 2 gigawatt spaceship outright and speed off to the nearest galaxy knowing I won't have to return it!
At the end of the day, in my view, owning a car outright would not be so attainable now if PCP did not exist, the volumes of sales would be down and prices even further up.
My plan for the RS3 is to pay it off before the end of term, if it turns out to be a good car, and keep it forever.