Honestly though pro's, con's, (and there's probably some I missed) I think in practice there isn't really any clear winner and it's going to boil down to preference more than anything, both systems seem to do the fundamental job.
I agree with the reasons for your "pros and cons", JoeSixpack, and also your bottom line, they all do the job. I have a lot of handguns and, though I've never been concerned with the mode of primer ignition as a consideration when buying one, I just now reviewed my inventory of semi-autos and was surprised to see that everyone of them are hammer-fired (I'm pretty sure the S&W Model 41 is hammer-fired, albeit concealed). Guess I'm a "hammer guy" and never knew it.
There is one possible drawback to "fire control systems" on pistols that rely on the hammer being kept under tension by the mainspring that I was made aware of many years ago. I read a review in 2004 of the then new HK Model P2000 pistol having the "Law Enforcement Modification" (LEM) configured trigger/fire system, written by Charlie Cutshaw. Though Mr. Cutshaw, in general, praised the pistol he did report this caution:
"...A final note regarding the LEM: When the slide is worked to the rear and sets the hammer against the sear, the hammer is under tension by the mainspring. For this reason, HK recommends that the pistol be cleared and the hammer dropped on an empty chamber prior to placing the pistol into long-term storage. This is probably a good idea, as it is not advisable to place any device into long-term storage with springs under tension."
It would seem that a lot of pistols are theoretically time restrained by this admonition, including most, if not all, "striker-fired" pistols as well as sa pistols like the 1911 kept in a "condition 1" state of readiness, not to mention the great magazine compressed springs debate.
Because I seldom clear my EDC auto on a regular basis, I was interested in what HK considers "long-term" and I wrote a letter to them expressing my concerns and asked them what they mean specifically by the term "long term storage"; additionally asking "is a month between times too long?"
On 8-10-2004, they responded with the following (maybe cya or maybe not) "explanation": "HK recommends that the P2000 pistol be cleared and the hammer dropped on an empty chamber prior to long term storage to protect the life of the spring."