Yep because we were getting above average quality Major League production at 2B, C, CF. For at least two of those positions, the jury is still out on how they will perform. Plus although Lee wasn't giving us adequate offensive production, he still gives us presumably much better defense at first than Hoff would. Neither Fontenot, Soto, nor Johnson have shown us any indication that they wont be able to produce this season. You don't think there's a reasonable chance that Fontenot and Fukudome/Johnson don't match the production we got from 2B and CF last year? Not to mention the possibility that Soto regresses a bit this year. The point is Lee's health isn't the determining factor. He was healthy, and sucked last year. If he's unhealthy, and doesn't play as much, that's not going to be the difference between the Cubs succeeding and the Cubs struggling. Other positions are far more important.