I guess it depends upon how you use your computer. I mentioned in the previous thread that partitions annoy some and for others it works quite well.

Anyway, my computer with Windows 7 Pro has:

Windows 7 partition: 60 GB, 25.6 of which is still free. I have installed Quickbooks 2011, Microsoft Office 2010, Mapshots EasiSuite, OpenOffice, Paint.NET and other smaller programs that I'm too lazy to look at and list. I don't play games and all my data is stored on my other partitions. If I really screw something up on my Windows 7 Partition somehow, I just re-install (most important stuff backed up) and then I don't have to transfer data between hard drives or other backup devices after the re-install is complete.

My other partitions are:

Programs (where I store programs that I download. I don't install them here, I just download them to this partition): 50 GB, 36.4 of which is free

Files_&_Documents: 50 GB, 19.4 of which is free

Windows 8 (where I intend to install Windows 8 someday when I decide I'm ready for it and then I'll have a dual boot): 60 GB all of which is free

Memories (where I store pictures and videos that I've taken): 150 GB, 94.8 of which is free

Music: 25 GB, 23.6 of which is free (I don't do much with music)

Misc: 30.7 GB all of which is free

I believe I have unallocated space as well that's not going to show up in Windows right now. I have that reserved for installing Linux at some point.

I've never really understood the need for large quantities of hard drive space, especially on the Windows partition itself. Windows doesn't take that much room and I've got a fair number of business applications installed. Games must just have crazy hard drive space requirements.

The only legitimate (non-gaming) use I can find for lots and lots of hard drive space would be video pictures and music of which I just don't have that much. Other people may have different needs than me but that's how it works for me.