"Why is it that are so many people are reluctant to fly a PC?"
A friend, with many years and hours flying, let his hours get low in the second year, and chose the PC.
He was given a PFL, and positioned for a microlight strip, down to very short final. He was failed for not flying a circuit, and had to take instruction in circuits from a simulated engine failure.
Instructors can be unpredictable.
(I've been renting occasionally over the last year, and all the checkouts were excellent.)