Actually you can go back,
either by; Backups, or 3rd party software like Partition Magic.
However NTFS has a lot of advantages;
Paging File System [Dont need to run Scandisk at start (or the WinXP/2K Equiv) on bad shutdown]
Enhanced Security Options [Allow certain users to stay to certain folders/files]
Better Speed [Files in Tree rather than the FAT32 conventions of largest free block]
Smaller Clusters [Less wasted space on HD [usually about 100-300mb per Gig!]
Also increased Seek speed thanks to the file tree. [a side effect of the tree mentioned above]

Havnt looked back yet myself, havnt used my 98 partition for over a year, thinking of deleting it
-Gwala