Office suite is a great program that covers all areas (word processing, spread sheets, presentations, etc.) and it works seamlessly from Mac to PC and back. I would get it unless you work in an all Mac environment and don't receive emails or documents from any PC users.
Depends on how you work. Office for Mac is not perfect, but works with Office for Windows. If you need to share documents, it's the best solution. In iWork, Numbers is not so good as Excel, but Keynote is much much better than Powerpoint. In my case, I got both.
I installed it on mine, and I really use it. It is a personal decision, depending on how often you would use it. Truthfully , I didn't really need it because I still have 2 Windows computers with the Microsoft version of Office.
Hi, I guess it all depends why you bought the Mac in the first place. I bought it because I hated my Dell, no viruses and mostly to store my photographs and music. You should call the Apple store. They would be much more helpful than I. Good luck with your MacBook.)