Why is it not right? there is an exchange features and people actually post their created sims over there which means they allowing their created sims to be played by others. as for me I dont usually upload my sims as I want my sims(especially the in-game born) to be only unique to me, but often I played a premade one and sometime I find it odd that they are being played by other players as well. my favorite premade are Benjamin Schmidt, Felipe Marshall and Gracie Loveland and they are actually quite popular premades when i browsed sims subreddit and blogs