I liked '98 - at least it was reliable!

XP keeps locking up - and sometimes does things all on it's own.

The nutcases that create the ads you don't want, the viruses, and the spy stuff, trying to steal information mostly write it for XP and other "modern" software.
They don't bother with '98 any more.

Part of the reason I liked '98 was it still had a real MS DOS - newer ones don't. It's a phony MS DOS, things like Lotus 123 and Dbase II need the real thing.