Part of why I still hate it at work; work knows almost everything about me. People with poor understanding of PII have my personal information, and use MS products. Microsoft knows all of that, and everything that I type, the notes I make, the phrases I use, inferences on my interests, and can combine that with other profiles. It helps put together a much more complete picture and profile of me and why I interface with. And I can’t opt out, can’t use Linux, and can’t just go somewhere else to avoid it.