Bruce Ross, 64, of Ajijic, Mexico, near Guadalajara, is also dealing with his mixed feelings about Livestrong and Armstrong. Ross has worn his two Livestrong bracelets, one for each time he had cancer, every day since his second surgery in 2006. He gives Livestrong cancer guidebooks to patients he meets who have been newly diagnosed, but has separated his feelings about the foundation from Armstrong.

"When people ask me about Lance, I try to leave him out of the conversation if I can discuss Livestrong in the answer," he said in an e-mail. "For me, the last year has been all about the foundation."

Armstrong's actions have also changed the way some family members of cancer survivors view him. Susan Moberg Hopkins of Seattle, who submitted an iReport about her family, still supports Livestrong, but has a cynical view toward Armstrong.

Hopkins' family contacted Livestrong after her late husband, Marty, found out he had a brain tumor, and she said the staff there was very responsive. Marty was a big fan of Armstrong, and the Hopkins used the cyclist as a way of explaining to her children, who were 12 and 17, that it's possible to recover from cancer and accomplish many things.

"You look for role models, you look for people that help get you through things, and I would say Lance did that," she said Friday.

Armstrong is less of a role model now, she said, because he lied about what he did to get ahead in cycling. The Livestrong bracelets, she believes, are "tainted" by Armstrong.

He affected people "in a way that is far more significant than a bike race," she said. "It's about life and death. I don't know if he will ever be able to say he's really sorry."