The 9mm will never die for one simple reason, WOMEN. The 9mm is an excellent round for people with smaller hands who cannot handle the recoil of larger calibers. It does have many other advantages to. It can be loaded into a smaller, more compact platform without sacrificing capacity and it is a very accurate round even past 25 yards. I have 2 9's. The SA XD-9 subcompact and the Sig Saur P-239. The SA, XD-9 SC is my cary gun for wearing a T-shirt or other light clothes. With the extended mag it holds 16+1 and the standard mag holds ten. The P 239 tactical is my every day cary weapon and I really love the design.