Safe because they significantly influence the car’s handling. Lower performance by shock absorbers markedly worsens, in particular, the “sitting” of the car in bends and extends its braking distance.
Economical because shock absorbers with worse effectiveness most affect wear and tear on the tyres. If there is poor shock absorption, other car parts are also subject to mechanical wear and tear and then require expensive repairs.
Comfortable because, in particular, on roads with a worse surface, the quality and precision of shock absorbers are felt the most. Driving comfort is one of the most important requirements placed on a modern vehicle.