I think the way people feel about Armstrong will go through stages, a bit like you can think of the
5 stages of grief:
We've had Denial. Oh yes, we've had a hell of a lot of denial.
We've had Anger too.
Bargaining has got underway - LA puts out feelers, pictures on twitter, to see how people will react to him. Bargaining of a different sort, with SCA already got underway, although so far rejected.
I guess, the shame of owning USPS kit is part of Depression with associated bad feeling of owning it.
What I'm trying to say is that Acceptance is the light at the end of the tunnel. If you bought Livestrong/USPS/Disco kit, you may feel bad about it right now but... it wasn't really your fault that you believed - very few didn't at the time. It's fundamentally good kit and remains so. Just put it away for a bit, or make an ironical modification and in the fullness of time, you can sport it with knowing and wisdom, recognising the superficiality of branding for what it is and that it is not about you or product branding. As someone once said, it's about the bike itself....