Why hate Microsoft?

Over the past few decades, I have known some people who hate Microsoft or various individual Microsoft products.

Some use alternative products like Linux and Apple.

I can understand hating companies that pollute (BP and Exxon) and exploit (Wal Mart), but hating Microsoft baffles me.

Please, explain the reasons some people hate Microsoft. I am curious to know the facts.

Personally, I understand disliking Microsoft’s Internet Explorer, which I haven’t used for a very long time because I believe other browsers are superior. However, I use Microsoft Office all the time, and I’m very happy with it.

I understand having an opinion that is backed by facts, but some of the people I know who hate Microsoft seem to do so only because of its success.