The default cursor movement commands probably predate emacs. Such that you are used to readline defaults. https://news.ycombinator.com/item?id=24083753 is the first post I'm finding on that.
That said, I'm curious what the weight of emacs was on you? If it was that you were wanting to be in the other editor, than it makes sense that you should stay in the other editor. But this is no different than a lot of things. Is why some folks don't like changing the vehicle type that they use daily. Very little rational argument one way or the other. Such that, yes, you should use what makes you happy. Not only does it make you happy, but you are probably more effective because of that.
That said, I'm curious what the weight of emacs was on you? If it was that you were wanting to be in the other editor, than it makes sense that you should stay in the other editor. But this is no different than a lot of things. Is why some folks don't like changing the vehicle type that they use daily. Very little rational argument one way or the other. Such that, yes, you should use what makes you happy. Not only does it make you happy, but you are probably more effective because of that.