Why All The Fuss About Plastic Pistols?

I'm sure some of you don't understand my obsession with these plastic pistols.

I've just stumbled upon this article from Guns & Ammo's Handguns magazine. It is a polymer pistol shootout article. It may explain a bit.

Some notes on Glocks from myself:
It's not hard to get hold of a barely used Glock for about $400. Magazines can be had for under $20. Pretty much every company that makes holsters and mag pouches makes some for Glocks. My Glock 17s and even my 26 will do better than 3" groups at 25 yards; my 17 with KKM barrel will do 1.5". The M&P got a better score than the Glock for trigger control? I'd like to know how they drew that conclusion. All the sights offered by Glock are quite horrible, and this is probably some of the reason for the average accuracy. Reloading speed can be increased quite a bit by installing a $5 Scherer slug plug, as it keeps the top-rear of the magazine from getting caught on the web at the rear of the magazine well.