If your sole focus was to get strong, a lot of things would fall in to place. That knee pain that’s been bothering you might be diminished if you focused on strengthening your glutes, hamstrings and VMO through proper exercise selection. That 10lbs of unwanted bodyfat may fall off your frame by adding some lean muscle mass and boosting your metabolism through strength training. May be you want to get “jacked”. Forget about all those Muscle & Fiction tri-set routines and work on getting stronger in the compound lifts. There are a ton of other examples and my message would still be the same. Stop over analyizing and focus on being strong.