if you aren’t bothered about the performance side of things then yeah if it ain’t broke etc
If you are though it makes a massive difference after only a few months of riding
I work on a fair few shocks and a solid couple of weeks in the Alps will have a shock performing way below what it’s capable of , depends a lot on the rider the terrain and the shock in question
For me the the trick is in finding someone that will change the damper oil and charge the ifp for you with out all the full service kit and sending it off expense