I bought a lawnmower from Sears, yes Sears, 20 years ago. It has had one tuneup about 5 years ago when I couldn’t get it started in the Spring.
Of course, when you only mow your grass about 10 times a year, it doesn’t get too worn down.
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I have a 20 year old Sears lawn tractor that I use fore fire clearing at the ranch. The motor is like new, but everything else has been replaced multiple times.
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I’m still using a Sears lawnmower after 14 years, never changed the oil or used fuel stabilizer or done anything except put gas in it and mow the lawn. The air filter bolt is stripped out of the plastic fitting, so the filter just rides loose on the carburetor. It takes a good shot of starting ether to get that mower going these days, which washes all the dirt down into the carb.
When I absolutely can’t get it running, I’ll buy another.