I avoided stud earrings for years because they struck me as the earring equivalent of beige walls, the safe choice you make when you can't be bothered to have a personality. I'd go straight for the hoops or the drop earrings every time, the ones that actually did something when I turned my head. What changed was losing a hoop down a drain outside a chemist and realising I wanted something I could put in without a mirror, at speed, half asleep, and not think about again until I took it out that night.
They're the wrong choice if you want anything to actually show up from across a room, or if your ears are the kind of sensitive that reacts to anything short of pure gold, because a cheap post will have you with a sore lobe by Thursday. A disappointing pair tends to give itself away fast: the stone sits a little loose and you can feel it wobble with your fingertip, the plating goes thin and yellowish at the edges within a couple of months, and the butterfly backs are so flimsy they either won't stay shut or grip so hard you need pliers to get them off. A good pair feels different from the moment you pick it up. The setting holds the stone properly rather than gluing it on top, the post is smooth all the way along with no rough seam where it was cast, and the back has a bit of weight and spring to it so it clicks into place rather than just sitting there hoping. Solid gold or proper sterling silver will tell on a cheap alternative every single time, usually around the six month mark when the cheap one has gone dull and this one hasn't moved an inch.
Where studs let themselves down is when you pair them with anything else that wants attention near your face, a statement collar, a scarf with a lot going on, big sunglasses pushed up into your hair. They get lost, and you end up looking like you forgot to finish getting dressed rather than like you made a decision. They also don't love being worn with a second pair in the same ear if one of them is remotely dainty, the smaller one just vanishes and you've wasted an earring.
Next time you're looking at a pair, skip the sparkle first and check how the back closes, because that's the part doing all the actual work.