Yep, I agree. I don't think the use of Microsoft software on the Macintosh platform is 'bad per se'. It's sad that for _really_ using OpenOffice.org, you'd have to switch to Linux or Windows right now, as the Mac port just isn't there yet. This means that, right now, for good interoperability with other Office users (PC or Mac side), you'll have to use Microsoft's Office v. X or later 2004.
I think Microsoft has done but good things for the Macintosh platform since Office 98 (which was one of the first products of the then created MBU at Microsoft). They even brought Office to Mac OS X in a reasonable amount of time (i.e. before Adobe brought Photoshop, long before Quark brought XPress). Of course Apple also helped Microsoft by creating and constantly improving Carbon.
Let's just say that Office is an important piece of software for the Mac platform. Whether you personally like it or even use it doesn't matter here. And seeing MS keeping Office (more or less) up-to-date with the Windows version is something that makes me happy. More happy than, say, seeing Adobe kill Mac versions of software.
Of course, MS is not doing everything they can for Mac users. Or we would already have a VirtualPC that works much like Classic in Mac OS X (i.e. rootless, which was rumoured for VPC 6 at Connectix, iirc).