Enemies in Castlevania are generally not dangerous. In the very early Castlevania games there were those skeletons throwing bones at you near pitfalls, but a lot of 8-bit and to some extent 16-bit games were designed to be very arcade-like and unforgiving. No continues or saves, etc.
But if you play something like Symphony of the Night (and beyond), you'd rarely, if ever, encounter enemies that give you the kind of pause and caution that a Souls enemy do.
Your description of how you approach bosses can be applied to a massive amount of games as well. Megaman for example.