Two major things going against Favre I think are his age, (hard to argue that he hasn't stayed around one year too long) and his character. The waiting game speaks for itself
I'd feel so much better going into the season if Drew Brees was wearing purple.
Two things wrong with that scenario.
One- Favre's age has nothing to do with injuries. TJ is much younger and has missed more games due to injury than Favre. His character? You are the only one who has questioned his character, the waiting game means nothing but he is very concerned about not letting his team down. He was not certain he could come back and perform at his high level. I give him high marks for making sure he was healthy enough to play at a high level.
2- you are under the assumption that we could have Brees under center. Yeah it would be nice to have brees not because he is better than Favre but he is younger than Favre and we would have him for a longer time