Not a single, solitary thing.
It's an artifact of bye-gone days when leather straps were a functional reality in day to day life on things like harnesses and luggage.
IMO, the modern day functional equivalent is the folding scissors. I've owned Ulster BSA knives since I was 8. <counting on fingers...> That's very close to 5 decades now. So it's not like I haven't had enough time with knives with awls to understand them. I do keep an old beater BSA knife on my work bench and yes, I will admit there have actually been times when I've used a knife awl to scrape something or poke something. But it's incredibly rare and in all honesty, there are other tools that can just as equally be pressed into to poking and scraping duty.
The awl was made for punching holes in leather. I just don't need that on a daily EDC type basis. When I need to make a hole in leather (I work on leather bike saddles like Brooks and punching holes along the skirt to lace them is common) I use a plier type leather punch for a much cleaner hole.
If I could wave a wand and magically change all of the awls into folding scissors on all the BSA knives and multi-tools I own, I would do it in an instant.
Now... If somebody loves traditional knives for the sake of carrying a bit of living history, then an awl makes sense. It *IS* a connection to our past working days where you needed to cut and punch holes in leather strapping as a matter of course. That is definitely cool and from a collecting perspective or from the point of view of carrying an homage to that past, they make sense.
Functionally, they're like a coal shovel. I don't shovel coal at my house.
EDC Pair by
Pinnah, on Flickr