I've used Libre Office (and Open Office before that) for years, on and off. I briefly used it for my main office suite. Interesting differences, and mainly down to personal preference I suppose, but I always liked MS Office best. I can see why things might be the other way. It wouldn't break my heart if I was "stuck with" Libre Office.

Mind you, when I started work we had a typewriter for everyday letters, and most memos were written with a pen. 

I like LO because it's free, and also because I hate Microsoft and the horse the it rode in on.