In my opinion, every household should have at least one person who knows how to sharpen a knife and occasionally does so. Not that good knives need to be sharpened very often, but even the best knife will get a bit dull at some point and it will need to be sharpened.
But most of my friends do not know how to sharpen knives, some are even afraid of it. There is in my opinion absolutely no need to be afraid of sharpening knives, and you do not need any fancy or expensive equipment either. And when searching for knife sharpening info online, one can encounter some pretty wild stuff, sometimes stuff that is not true.
Two-three years ago during one of my yearly get-together with friends from university, I was (as usual) dismayed by the state of knives in the communal kitchen at our lodging, so I have decided to sharpen at least one knife to a state when it will cut and not squish. However, on this particular trip, I have forgotten to take a whetstone, so I had to do without it.
I went on a walk in the forest and I have checked the geology on the wayside, where the bare rock was exposed. It was granite, which is of no use. However, where is granite, there often are metamorphic shales nearby, so I went further – and it was indeed just a few km further (about a half-hour walk). This particular metamorphic shale was phyllite, which is suitable for making a whetstone. So I took two stones to a nearby stream and I ground them against each other until I got perfectly flat surfaces.
And thus obtained whetstone worked perfectly well. The knife did not have the best edge it could get, but it was good enough for cutting safely and comfortably. I have even managed to teach one of my friends how to sharpen with it, and I did recommend to him to buy a professionally made one afterward.
And what did I recommend to him to buy? A cheap two-layer whetstone for 10,-€, 100 and 300 grit. The same one with which my father was sharpening knives his whole life and which I sometimes take with me on my travels.
If you are interested in learning how to sharpen a knife, I do recommend the above mentioned Burrfection YouTube channel. He does explain the principles well, without exaggerating. And he supports his claims with empirical evidence. For example, I have said to my friend that sharpening angle more or less does not matter if it is between 10-20° and constant throughout the blade. That claim was based on nothing more than my subjective experience, which could be mistaken. But Burrfection did say the same and he has the equipment to test the said claim. So he did.
Do not be afraid of knife sharpening. The basics are easy and more than enough for a typical store-bought mass-produced western knife.