Actually, while security is an issue with fat32, the real reason to use ntfs is that it uses less disk space for the same amount of data.
ntfs uses a formatting scheme where the clusters are smaller so that files produce less surplus space in partially used clusters.
If you advance to ntfs, and there is no reason not to if you aren't dual booting between win9x or Linux, you will see that you have more room on your hard drive available. In these days of huge hard drives it may not be as much an issue as the old days of under a GB on a hard drive but files are quicker to load with smaller cluster sizes.
This url might help:
http://www.ntfs.com/ and here:
http://www.ntfs.com/ntfs_optimization.htm