I think as said multiple times it really depends on your needs and usage.
When I was on ships and deployed or in the field a CE really was the best suited edge for my needs. I used my knife daily and regularly cut ropes, lines, some nylon lines as thick as (4"-6") and a plain edge would just slide off that especially when wet. In addition thick heavy canvas and burlap and flex cuffs on occasion. Not to mention a plethora of other fibrous materials. The serrations really helped as far as getting the cut started.
The plain edge portion not only helped in completing cuts but the tip was very useful in those instances I just needed to slice something open with the tip, like opening a box, bag or slicing open lighter materials.
Also, when your in the field, regularly sharpening your blade or as ofetn as you like may not be an option. Especially on the water. I also truly appreciated the extended amount of time the serrations stayed sharp (much longer) between sharpening's.
The down side of course as everyone knows is sharpening serrations is not as easy, at least not for me, but that I didn't need to sharpen them as often was very helpful at times.
Again, it really comes down to what your regular or expected daily cutting needs are. Now retired and on land my daily cutting needs have change. I find I rarely have the same need for a serrated blade so these day's I only buy and carry a plain edge.
As I said my cutting needs have changed, plus there's a certain satisfaction knowing I can sharpen the blade myself to fairly high degree and esthetically prefer the look of a plain edge.
I get that the vast overwhelming majority of knife users will never use their knives regularly in a first responder capacity for SAR (Search and rescue) purposes or in an emergency but those that do can tell you of the benefits or preference of a serrated blade for certain types of cutting tasks.
Why I say, my needs have changed so I get it but I still know and can appreciate the value of a CE or fully serrated blade.