Car mechanics - I'm getting conflicting info about carbon buildup due to only driving locally / short trips, every single day - what gives?

I've googled the problem (carbon build up, difficulty starting unless pushed with accelerator, and sometimes wants to stall pretty often until warmed enough) - the cars certainly reaching plus 20 years old however I'm confused by Google versus what my mechanic said. *Carbon buildup is a natural process* - yet the mechanics like you gotta take the car for long trips not just to use the car as a daily driver only to X distance and back or small distances.

Lol what's the point of living in suburbia or a "15 minute city" where everything is in close drive. See my point? That means they're saying or google is also saying - you can't own a car just for the purpose of city trips. Well then why did they until recent make city small hatch-backs small city European cars and Japanese cars if carbon buildup is an engine killer / engine lifespan decliner?

Helllooooo ๐Ÿ˜‚๐Ÿ™‚๐Ÿ˜‚๐Ÿคญ๐Ÿคญ๐Ÿคญ

It's on the way out regardless of car age
Take it for a car service they'll clean it out, should be good as new then the engine. Or back to its usual self prior to the "carbon issues".
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1 y
Thanks folks - no financial advice here - it's wisdom to each to their own yet to me, I'm always actually good at numbers doing my Sums of whether "spending X amount for servicing or repairs or both" is still cheaper than spending XYZ to afford a replacement / newer car used even lol ; I'm quite happy to keep getting my humble aging Japanese ", the 6 month service it deserves and inspections and oil change" to keep prolonging it's lifespan - 😋👀🥳🥳🥳
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1 y
To me it's still far cheaper to keep extending its lifespan for "a few hundred dollars servicing" versus "10 thousand for a new used car or even 5 thousand for a older newer used car" ; still I'm satisfied I'm giving the humble car the humble care it earns - to the day it can't start no more even by the auto-shop 🛠️🔧👀♥️
Car mechanics - I'm getting conflicting info about carbon buildup due to only driving locally / short trips, every single day - what gives?
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