Well, I'm pretty much ambivalent about polymer versus metal framed pistols.
When it comes to issued weapons, which are first and foremost just safety equipment, whatever's suitable for our needs is fine. Reliability, ease of maintenance & service, long term durability, the ability to accomodate a wide spectrum of "users" regarding size & strength issues, etc., etc. Handguns carried as defensive weapons in the holsters of cops commonly take a "beating", and aesthetics just doesn't figure into it.
Even my personally owned weapons, which are purchased for defensive use, aren't selected for their aesthetic qualities. Sure, if there's a choice to be made, and all else is equal ... then appearance may play be a factor.
But appearance, ergonomics and balance are all factors that come into play when I select my single action revolvers ...
Polymer offers some weight saving advantages, as well as some maintenance advantages (no oxidized thumb prints).
While polymer is possessed of some qualities of "strength" equal to, or even exceeding, metal frames in many circumstances ... it has some potential "weaknesses" which must be considered when deciding upon which frame material would be most suitable for anyone's purposes.
Firstly, polymer may withstand "shock" very well when the design of the semiauto pistol is built and taking a polymer frame into consideration, such as when a locking block is used to absorb the initial "impact". However, polymer frames have been damaged when "struck" against hard objects ... or dropped, and especially when colder temperatures are involved ... and polymer frames probably aren't the best material to have between you and some "unexpected, uncommon & unanticipated" high pressure ammunition problem, such as a case head failure.
Polymer frames have cracked and chipped ... but then, they aren't really designed to be subjected to the types of impacts and forces which can cause such problems, are they? And, as long as they remain serviceable, who really cares if service weapons suffer minor dings, scratches, gouges and minor damage which can sometimes be expected to occur during the course of its use. They may certainly better survive a cop's unintentional "abuse" and neglect, compared to ... say, blued steel.
Although ... I've seen firsthand how polymer sights can be severely damaged by a short drop onto a hard surface ... and I've seen how a kydex holster can be broken beyond repair, and become instantly unserviceable, when subjected to the same short drop onto an asphalt surface (less than 2ft).
I've also seen firsthand how an "unintentionally bent" spring can dig into a polymer frame and damaged it. If it had been "allowed" to continue further, it would've probably quickly reached the point where the frame most likely would've required replacement. Hard to imagine the same extent of damage occurring with an aluminum or steel frame, though ...
I've seen how a "commercial reload" can be involved in a case head failure in an aluminum framed pistol, and aside from a surprised shooter, there was no damage to the weapon or the shooter ... and then I've held a polymer framed 9mm that had suffered damage, when a case head failed, which required replacement of the frame. No permanent damage to the shooter, other than a stinging hand, when a piece of the polymer frame departed for parts unknown ...
I think that polymer pistols are here to stay, and serve a very viable purpose when it comes to providing for lightweight defensive pistols that are easy to carry and maintain ... and are suitably strong enough to provide for service lives that are MUCH longer than anyone even considered necessary many years ago.
Of course, nobody's going to be nailing up wanted posters with them, that's for sure.
Personally? I like metal & wood ... but a tool is a tool, as long as it gets the job done.
Of course, I also like metal in my knife blades, too ... even though ceramic composit blade material is within reasonable cost, and offers excellent "cutting" characteristics, and can maintain its sharpness for much longer than most steel alloys. Don't go dropping it a lot, though ...
So, hey ... while many folks like wooden furniture on their rifles, the AR15/M16/M4 rifles have done acceptably well with plastic stocks, pistol grips and forends ... They lack a certain je ne sais quoi, however ...