My experience has been different.
Scissors. I've never used the scissors for anything other than trimming the odd moustacheo hair.
Can opener. Never used, even in the city.
Bottle opener. Yep but the spine of a knife works as well.
Cork screw. Never.
Saw. Not even the saw. What's reasonable for a sak saw is reasonable to break or baton IME.
Screwdrivers. Never.
Awl. A few times maybe.
File. Never.
Pliers. Never.
In the city I have a mutlitool in the car and maybe a sak in my pocket but I've gotten away from them in the woods. I can see how they COULD come in handy but for me they never have.
While I respect your opinion...I would point out that your field of view is rather restrictive...
In the last week I have used the tools on mine to :
Scissors: cut zip ties,heavy envelopes,paper,hair,wire,plastic
Can opener: used the small screwdriver tip on this to tighten some screws.
Bottle opener.: used the wire stripper to strip wire, used the large flat head, and opened cold beer last night!
Cork screw. N/A (farmer)
Saw. sawed up a whole bunch of 3/4 PVC for a project I built.
Screwdrivers. See above.
Awl. Clean my fingernails, scrape gunk off old parts
File. N/A (farmer)
Pliers. N/A (farmer)
Mine never leaves my pocket...even if I go on a plain I put it in my check bag in case the plane goes down so I know which bag to look for to find a knife...my bag (a pelican case) will be floating... If I'm lucky enough to survive the impact. If you think that's paranoid...look at all the airliners crashing in Asia...