Seriously, I realize this is just personal taste and nostalgia on my part. I also know that a lot of schlock got played on the air waves back then. However, imho, popular music schlock of the 1960s and 70s is superior to popular music schlock of today.
Two Ray Stevens songs come to mind: "Guitarzan" and "Everything is Beautiful". Pure schlock both of them. The former is sheer nonsense, the latter saccharine treacle. But you know what? The first is amusing in a juvenile fashion and the second is a catchy tune. I'd never purchase either, but forty years after I heard them on the radio, I still remember both songs. In contrast, much of the popular music of today washes right over me without making any impression; not even a bad one.