Bathrooms and kitchens get more use than any other rooms in the house, and the more people who live there, the more use they get. Every handle turned, every faucet run and every shower valve cycled adds up day after day and year after year, and that wear is normal. The problem comes when you get so used to it that you stop noticing, like the kitchen drip you've stopped hearing, the handle that needs a special wiggle, or the shower that runs a little after it's off.
Each of those signs points to a likely cause. A dripping faucet usually needs a new cartridge or seal, which is a small repair. A handle that gets hard to turn has wear reaching the parts inside, and it costs less to fix now than after it fails completely. A shower that drips after it's off usually has the same kind of worn part as a dripping faucet, and a leak at the valve itself is inside the wall where nobody sees it. Hard water can be tough on all of it.
The service covers kitchen faucets, bathroom faucets, and shower and tub fixtures, with a repair when a repair makes sense and a replacement when the fixture is worn out or you'd like something better. A new install needs to be seated, sealed and tested, since a poor install can leak into a cabinet for weeks before anyone notices. You get every recommendation in plain English, and every decision is yours.