Suspension setup really comes down to 2 things, shock travel & rider weight. A general average is static sag (just sitting on it) should be about 30% of the shocks travel. Air shocks are quite straight forward, more air/less air, but heavier riders may require a re-valve for proper adjustment. Coil over shocks are adjusted by adding/removing preload with the spring retention ring. If you cannot get close to the 30%, you have the wrong size spring. If shock has clickers, setup in the middle of adjustment range. Once setup correctly, small condition adjustments can be made with the clickers, which is a rebound/compression adjustment (their intended purpose). Non-clicker shocks, no adjustment really as you'd be changing the static sag. Most people who have not done proper setup and say it rides great, have never ridden with properly setup suspension, but some just may not be sensitive to the difference. One of my friends, I could basically lock out his suspension at one stop, soften all the way out at the next stop & he just thinks the trail conditions are different.