koka; you are mixing apples with oranges, and somehow trying to come up with beef stew. The question originally was about hammer vs striker fire. I simply mentioned that I WON'T carry a striker fire single action. And that I don't mind carrying a Hammer single action because I can manually decock the hammer. You're moving off into talking about double action only pistols. Me personally, I prefer a SA/DA pistol WITH a hammer. Such as my Sig P220, CZ-82, AP-MBP, walther, etc... Best of both worlds in my opinion.
Now, a double action striker fire is good too because the firing pin isn't being held back under tension. I mentioned that about the single action striker fire. Of course, the hammer version single action "1911A1" had to be brought up as an example that single action hammer has the same problem of being under tension as the striker fire. NO, IT DOES NOT!!! The hammer "1911A1" can be decocked.
Anyway; if were going to mix 20 different types of posts, then we should start another thread. For this one, it's real simple. Opinions are being asked about what people prefer; striker or hammer. Hammer has the advantage of flexibility in decocking it. Striker has the advantage of carrying so nothing can snag the hammer. My only concern is that with a hammer gun, you can have a single action or double action and you have the option of working around deficiencies. With an internal striker fire, you have no option. If you chamber it, the firing pin is under constant tension, and it CAN NOT be released except for pulling the trigger. The double action doesn't have this problem; and the hybrid "Glock", only slightly has this problem.