Late afternoon in winter is when I notice mine the most, that stretch between three and five when the light gets low and golden and my back starts to ache if I have been sitting too long. That's when I stand the desk up, finish the last hour on my feet, and feel noticeably less like a question mark by the time I close the laptop.
These work best in a room you are actually in for hours at a stretch, a home office, a corner of a bedroom, a spot in an open plan living room where you need the desk to behave itself. They suit a house where one person works from home most days and wants to move through sitting and standing without thinking about it. They suit a smaller apartment too, if you pick a model that does not need a huge footprint to raise and lower cleanly. Where they stop making sense is a desk used for twenty minutes a day to pay bills or sort mail, or a shared family desk where three different people need three different heights and nobody remembers to reset it. If you are tight on space and need to push a chair fully under the desk when not in use, check the clearance at the lowest setting first, some of these sit higher at the bottom of their range than a normal desk does.
Fully grown homes have power nearby already, which matters more than people expect, since most of these run on an electric motor and a cord, not a crank, and you do not want an extension cord snaking across a rug every day.
The difference between a good one and a disappointing one shows up in how it moves, not how it looks sitting still. A good motor is quiet and raises the desk in one smooth push, no grinding, no hesitation partway up. A disappointing one judders, stalls on the way up with any real weight on the surface, or takes forever to get anywhere. Look at the frame too, a steel frame with a proper crossbar is going to stay solid at full height, while a thin frame will wobble when you type standing up, which defeats the whole point. The tabletop matters less for stability but a lot for daily life, a dense engineered wood or solid wood top will not bow in the middle after a year of monitors and books.
On delivery day, check the weight capacity against what you are actually putting on it, monitor arm, a couple of monitors, a laptop stand adds up fast. Run it up and down a few times before you load it with anything, and listen for noise. Check the cable management included, because a desk that moves and a cord that does not is its own small disaster waiting to happen.
Get the motion right and it quietly fixes a problem you had stopped noticing you had.