Worf was raised by humans so it's quite possible that he might actually prefer women who have more human like features.
His little black book says he does. Jadzia, Ezri, Deanna, half-human K'Ehleyr...he likes 'em as smooth as possible.
Foreheads, that is.
I never did understand the Worf/Troi thing. Worf likes it when his women get aggressive. Troi is anything but aggressive.