Not just because it's easier, for some people it's the only way they can buy the bike/car they want.
I'd like to change my car for something similar, I can comfortably afford the PCP monthly payments, the initial deposit and when the balloon payment is due I'll have an investment maturing that will cover that, insha'Allah.
Bank loan/H.P. payments are way above the P.C.P. amount and completely beyond my monthly fiscal capabilities.
I understand that whilst P.C.P. might not be the most economic way of buying a new vehicle it's the only way I could make the change and as you, me and many others often say, 'You're only here once, if you like it and you can afford it' then buy it.'.
What's really making me baulk at going ahead with it is the 12.9/13.9% A.P.R. rate being charged by J.L.R. dealers for 2nd hand vehicles.
As someone else noted it would work out cheaper for me to buy a brand new J.L.R. vehicle than a 2 year old 2nd hand equivalent based on the interest rates being charged for the respective vehicles.