This is bad, but not for the reason you mentioned. When you use the decocker and it is left in the "1/4 cocked" position, the hammer is sitting on a ledge and is not in contact with the firing pin. This is what keeps the gun from being able to shoot when it is dropped or if the hammer is struck by something. If you pull the trigger and lower the hammer, the hammer is sitting on the firing pin directly. Use the decock. It was designed like it is because it is the safest way to lower the hammer. The 1/4 cocked position does not have ANY adverse effets and makes your gun much more safe.
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