And that, too, is a proper use of a camera :) Quietly satisfying.
if you haven't already, one thing to ask yourself is whether you should rotate the shot to make the leftmost verticals truly vertical. it's not a question with a universal correct answer - with a photo like this, you could easily decide that true vertical will look too clinical and against the spirit of the rest of the photo, and that the "out of the camera" angle is better. And it is your opinion that counts!