It's confortable for flight sims or arcades because it feels intuitive.
For everything else? No way José.
In fact, I would like someone from this forum who plays with inverted controls to explain what is the "logic" behind it.
I mean, for an FPS, playing without inverted camera controls means that, if you pull up, your character looks up, if you pull left, you look left, etc.
But for inverted? You pull up and the character looks down, you pull left and the character looks right. It doesn't make sense to me.
Unless you think of it like your character has an imaginary handle on the back of their head and the camera controls its movement, that makes some sense, right?