The specious argument "raising gives you two ways to win," sounds good, but I don't think it really holds up. For example, when you're holding a hand for which a worse hand will never call a raise or bet, then a bet or raise doesn't have the advantage of allowing you to "win two ways." It only wins one way: when your opponent folds, since otherwise your opponent calls and you lose.

I honestly don't think there's much value in talking about "calling in general." It's a good decision in some situations, and not in others, and for varying reasons in each case.