Why do you like them ? Have you driven one ?
They were a pretend sporty car for posers who didnt know any better. If they had they would have bought a sporty Escort with its excellent handling.
I've had eleven. Or twelve. Or possibly thirteen.
There's little difference in handling between an Escort and a Capri, because it's basically the same bits underneath - the front suspension is interchangeable except for the extra width in the crossmember, rack and anti-roll bar. Smaller engined Capris share the same axle as an Escort, although it is wider. Rear leaf springs are closer to mk2 Cortinas.
Capris sold well for the same reason Mustangs did; they good to look at, fun to drive and affordable to own. Most of them are no better than the cars they're based on, which is Cortina/Escort for the Capri, and Ford Falcon for the Mustang. So there were a lot of four cylinder Capris, and even more 6 cylinder Mustangs.
And if you think a Capri isn't sporty(whatever that means to you), make damn sure you never get in a Mustang, let alone
drive one.