Steel Revolver v Polymer Pistol: Old v New:

News is that NYPD is ending forever the use of revolvers by it's officers - but individuals may retain their wheel guns as back-ups.

 31 August 2018 marks this notable retirement.
Link:
http://www.thefirearmblog.com/blog/2017/11/30/nypd-set-retire-last-revolvers/?utm_source=Newsletter&utm_medium=Email&utm_content=2017-12-03&utm_campaign=Weekly+Newsletter

  Glocks - both G17 & G19, - and Sigs will be the rule.

Technology has progressed considerably in my lifetime - as an illustration - compare an MG TF sports car that I wanted as a teenager, - to my current wee Honda Jazz:

The closest I got to owning one of these was when I rolled into the rear of one in my mini van (slow speed - no damage) at some road works in the rainy Edgeware Road, London in 1966.

The MG TF  was a 2 door convertible car with a front mounted engine powering the rear wheels. The 1.5 litre engine is a naturally aspirated, overhead valve, 4 cylinder that develops 65 bhp (66 PS/48 kW) of power at 5500 rpm. Having a claimed kerb weight of 912 kg, the MG TF can dispense with the 0-60 mph  sprint in 16.3 seconds. Top speed is 137 km/h, which equates to 85 mph. While fuel consumption would average around 30 mpg.

My (1070kg.) Honda Jazz RS knocks-out TWICE the MG's power @ 97kW/155Nm from the 1.5 litre 'Earth Dream Technology' ivtec DOHC motor. - I'm getting 5.7 litres/100k - that's within a sniff of 50mpg in Olde English - and the 0-60mph (that's 0-100k) is 9 seconds.

And this wee "Jazz grannymobile" has much better comfort, braking, steering & handling too.

Likewise ... my current technology Glock 17 out-scores my revolvers (even my latest Ruger 327 caliber) and for serious work it would rate as being superior in many facets. 
But both the cars and handguns ..  are very different & desirable in their own way - and pleasing to use. Revolvers can fire a variety of 'odd-ball' loads that would never function a semi-auto.

- & we do need to remember that the old tech versions continue to be mostly effective - as being old doesn't mean that everything stops working eh. 

New-Tech & Old-Tech .. Both Great.

Marty K.