Agreed. I've launched, docked, and landed hundreds of craft manually. My early interplanetary missions were all planned and piloted by hand. By after a while, those things become mundane. Mechjeb allows me to focus on designing and planning. Of course, I still prefer to manually dock (it's just fun to me), but I will allow Mechjeb to make the initial rendezvous. And I usually handle important or complicated landings. But overall, Mechjeb is a vital tool for me, not a cheat. Ironically, I before I gave Mechjeb a chance, I also considered it a 'cheat.' Now I know it's a valuable tool that, for me, increases KSP's fun-factor.