I think we all prefer what we're most familiar with. VMS hearkens back to an era before tab completion was common and it still throws me when I have to type DIR

I think we all prefer what we're most familiar with. VMS hearkens back to an era before tab completion was common and it still throws me when I have to type DIR instead of ls. But... VMS does have some interesting features. Even if you prefer Linux, it's interesting to compare the two and read about why the VMS designers did what they did.