I agree he should have challenged the fumble but I can think of several Bears coaches worse than Lovie - Abe Gibron, Wanny, and Jauron all come to mind. Then you have the obvious idiots that have coached for other teams just in the past 10 years - Marty Morningwig, Steve Spurrier, Nick Saban, Butch Davis, Rod Marinelli, etc...
Lovie has a ton of faults and their is a big part of me that wants him gone but he is by far not the worst coach ever.
Peace