I think the most you can plausibly say is that for humanlike architectures, memories of suffering (not necessarily true ones) are necessary to appreciate pleasures more complex than heroin. Probably what matters is that there's some degree of empathy with suffering, whether or not that empathy comes from memories. Even in that weakened form the statement doesn't sound plausible to me.

Anyway it seems to me that utopianly speaking the proper psychological contrast for pleasure is sobriety rather than pain.