Well said Birv.
It's why I would take McNabb on either of my teams in a heartbeat. He's been key to the success the Eagles have had over the last decade. They may not have been able to win the championship games or Super Bowl, but they've gotten there in large part because of his play.
Not every QB makes the right decisions all the time, but McNabb seems to make plenty of them and his athleticism is an intangible which greatly benefits the Eagles. If they were to drop him, then what? There is no free agent of his caliber available so that leaves Kolb. Kolb may be good someday, but I don't think a team that just made the NFC championship game should be at a "rebuilding" stage just yet.
"I happen to have perfect situational awareness, Lana. Which cannot be taught, by the way. Like a poet's ... mind for ... to make the perfect words." - Sterling Archer