So many excellent replies up above.
I've never had a PCP and, most likely, never will, although I can well understand many people's preference towards them.
Like so many, I only shoot for pleasure. And the simplicity and purity of the springer does it for me. Punishing of poor technique, but so rewarding when you're in the zone and "on it".
I love the fact that they're easily owner serviceable / fixable / tuneable. So easy to understand and so little to go wrong. Trying to get the springer to reveal its innermost dynamic secrets is altogether a different subject, though.
And self-contained. So no pumps or bottles. The nearest place to me for bottle fills is about 16 miles away. Having to transport a bottle of high pressure air would fill me with dread. Okay, you'd have it securely and safely fastened. But what if you were involved in an accident?
And character. My, the boingers have it in bucketloads. And it's such a tactile system. And you invest so much more in each shot, developing a therapeutic, repeatable technique regime.
Love 'em to bits.