The drip that won't quit
You've tightened the handle a few times now. Maybe you replaced a washer or watched a video on it. The drip stops for a week, then it's back, sometimes worse. Or the water pressure at the kitchen sink has gotten weak and uneven, even though the rest of the house is fine. That's usually the moment people start wondering if it's time to just replace the whole thing instead of chasing the problem again.
Around Nixa, a lot of homes are twenty to forty years old, built during the growth years when the town expanded out from the square toward Highway 14 and 65. Faucets from that era, especially original builder-grade ones, were never meant to last the life of the house. If yours has never been swapped out, there's a decent chance it's original, and that changes the math on repair versus replace.
What the water here does to fixtures
This part of Missouri has hard water, and years of mineral buildup take a toll on internal faucet parts you can't see from the counter. Calcium deposits get into the cartridge or valve seat and cause the slow leaks and stiff handles that never fully go away no matter how many times you take it apart. If you've noticed white, crusty buildup around the base of the spout or under the handle, that's a sign the same thing is happening inside.
Seasonal temperature swings matter too. Nixa gets genuinely cold snaps in winter and humid, hot summers, and that cycle stresses supply lines and connections under the sink. Cheaper faucets with plastic internal components tend to crack or wear out faster under that kind of repeated expansion and contraction. If the faucet is more than fifteen years old, it was probably built before manufacturers improved those materials, and it's more likely to fail at a joint than at a simple washer.
More on this from When A Faucet Is Worth Replacing Instead Of Repairing.
What you can check yourself
Before deciding anything, look underneath the sink with a flashlight. Check where the supply lines connect to the faucet body. If you see corrosion, greenish staining on copper lines, or mineral crust at the connections, that's aging hardware, not just a worn washer. Wipe everything dry, then run the water and watch for a few minutes to see exactly where moisture appears.
Test the handle for looseness at the base, not just at the pivot point. A wobble at the base often means the mounting nut or the faucet body itself has worn out, not just the cartridge. Also check if hot and cold have started blending unpredictably, that's usually a cartridge or valve problem, and while it's sometimes repairable, on an older faucet the replacement cartridge may no longer be sold, especially for discontinued builder-grade brands common in Nixa subdivisions from the late 1990s and 2000s.
When repair stops making sense
A single repair, like a new O-ring or cartridge, is worth doing if the faucet is otherwise solid and under ten years old. But once you're looking at a second or third repair on the same fixture within a couple of years, you're usually just delaying the same outcome. Parts for older faucets get harder to find every year, and a plumber will often tell you honestly that sourcing a match isn't worth the labor compared to installing something new.
If the finish is pitted, if the spout has visible corrosion, or if you've got leaks at more than one point on the same faucet, that's usually the threshold. At that stage the fixture itself is breaking down, not just one part of it, and no single replacement part fixes that.
Where it stops being a DIY job
Swapping a faucet sounds simple until you're underneath the sink with limited space, corroded shutoff valves that won't turn, or supply lines that don't match modern fittings. If your shutoff valves haven't been touched in years, and many haven't in older Nixa homes, they can seize or break when you try to close them, which turns a faucet swap into a bigger repair involving the water line itself.
If you get partway into removing an old faucet and find that the mounting nuts are rusted solid, or the countertop material makes it hard to get a wrench in at the right angle, that's the point to call a plumber rather than force it. Cracking a sink or stripping a valve trying to save a little money on labor almost always costs more to fix afterward than the original job would have.