I want to win man, but 1 win on a private league doesnt tell me a lot. I am ready to sacrifice one meaningless win on a private league, just to prepare my team for my next league game. I actually asking some friends on my P.L, to play with a certain way, and see how some tactics respond. For example, i would never play 1-3-1 against LI on a league game, but i can do it on the private league.
You have mentioned some of the best teams/managers of the game. I dont consider my self as an elite one or on there level, but i want to be one some day. Private leagues are one of the things that helping me to make that target.