Black jackets get called boring more often than any other colour choice, and I understand why, but I still reach for mine before anything patterned or camel or whatever else is having a moment. It's not boring. It's just not trying to entertain you, which is a different thing entirely. A black jacket does its job quietly and lets the rest of the outfit have the opinions.
It sits over almost everything you already own without an argument. Jeans and a white tee, a slip dress you'd otherwise feel exposed in, a jumper that's slightly too casual for where you're going, a black jacket smartens all of it without you having to think. It's the one that works equally well walking the dog and meeting someone for a drink straight after, which sounds like a small thing until you're standing in a hallway with eleven minutes to change and no clean options. Spring and autumn are its real seasons, when you need a layer but not an insulated one, though a lighter black jacket earns its spot in summer evenings too, thrown over bare arms once the sun's gone down. Winter it tends to sit under something warmer, which is fine, that's not a failure, that's just the order of things.
Where it genuinely separates itself from the rest of your jackets is in how it ages. A good black jacket in a decent fabric, proper cotton, a wool blend, a leather that isn't paper thin, will fade evenly if it fades at all, and a slightly softened black looks deliberate in a way a faded navy or faded green just looks tired. The cheap ones go grey at the elbows and cuffs within a year, and no amount of washing fixes that, so check the fabric content before anything else, not the cut. Wash it less than you think you need to, turn it inside out if it's cotton, and keep leather ones away from radiators unless you enjoy the smell of a jacket slowly giving up.
On shades, true black is less forgiving than people assume, it shows fading and dust and cat hair with real enthusiasm, so a slightly softer black or a black with a faint warmth to it tends to live better day to day and photographs the same either way. Matte finishes hide more sins than anything with a sheen. Reach for it on the mornings you haven't decided what you're doing yet, on the days something needs smartening without looking like you tried, and on any evening where the plan changed twice before you left the house.