I think he's bowing out gracefully, at the top, something many athletes dont have the luxury of doing, or miss out on the opportunity to do.
I would still say he's the greatest cyclist. He's got the most TDF wins ever and he's beaten cancer to do it. I mean its impressive that he can even finish the race after fighting the cancer.
As for the steroid issues, I don't know what to think. I read a very good article recently on Bo Jackson suing accusers that linked him to steroids. He willingly let his medical records be open, publicly denied ever using any form of steroid, and got them to retract the statement almost instantly by flaunting his innocence.
Seeing that, then watching guys like Bonds and MacGuire hide the truth, and flat out lie (yeah Barry, I'm stupid enough to believe you were given roids, but didn't realize what they were), I can only assume they're guilty. So, not knowing exactly how Armstrong reacted to his allegations makes me pensive to decide either way what I think about his innocence or guilt.