With Snow Leopard coming out in the next few weeks, Apple is taking aim at Entourage more than any other Microsoft product. Entourage has always been purposefully made to work just a little bit worse than Outlook. The one area people are more willing to leave now is Entourage's email. But that also doesn't mean there is reason to upgrade. Numbers and Keynote aren't as common as Excel and Powerpoint. I expect most people aren't ready to fully leave Microsoft Office yet, however.
Ironically, I needed Microsoft's Remote Desktop (standalone installer) once, but other than that, I've been able to keep my personal Mac 100% Microsoft Free. That was almost three months ago and I am still without. I recently got a new personal Mac and decided to wait as long as possible without installing Office.
