Ask HN: Why do you disable HTML form autocomplete?

I've been noticing that Chrome's autocomplete does not work on significantly more sites than it does. Each time I've been inspecting the HTML and sometimes its caused by unsemantic form field names, but more often it's forcefully disabled with `autocomplete="off"`. Why are people doing this? It's cumbersome and error prone to fill in the same monotonous information over and over, please let my browser do it for me.