Postal 2 MP is a laggy shit.... How many servers are running worldwide? 3? 5? 7? Nobody want to play P2 MP 
You're quite wrong, actually.
It's down to about 10 servers now but for quite a while there was a good 20-30 servers running and up to 100 players online at any one time, and being a cult game that's over 7 years old it's had a very good run, even when you compare it to many other higher profile games that came out around the same time on the same engine.
The amount of mods and maps available for it is incredible, and comparable to a game like Unreal 2004. Download just the 1409X patch and it's already the most configurable online FPS game there has ever been. Things have slowed down in this area, but thanks to a handful of Russian modders there is still new content for MP coming.
It does not handle to well at higher pings (much like Unreal 99 didn't, this uses the same net code) but it's perfectly playable if you find a local server. Despite that, there are many players that have been playing this game for many years. Up until about 2 years ago there was even enough players and clans to run a yearly league for Snatch (CTF), and on top of that there are many that only play DeathMatch.
