Neither would being able to sprint a 4.4 40, or being able to jog for 20 minutes, or being able to squat over 100 lbs.
Where should goals of gaining muscle, or endurance, or losing fat end? Right at the point where we can survive a desk job and sedentary lifestyle?
I can feel good and energetic at a bodyweight of 150 lbs, but I feel better at 180, even with about 7% more body fat on me.
I have a mass/strength building goal right now (while also improving endurance), hence the added body fat which I am willing to have to reach my goals. Once I reach my LBM goals, getting rid of the excess fat will be easy if I do it right.
I can only imagine that I'll feel even better with better cardio vascular endurance, muscular endurance, and muscle mass, and lower body fat when I reach 200(ish) pounds.
Lifting heavy weights feels good and gets addicting and fun, especially if you change things up and continue to improve.
I think once you start to do it correctly, and get good at it you'll understand.
Of course it's your choice if you want to have mediocre, easy, small-results-producing goals.