You're better off shedding the label. Straight Edge is a form of of vanity, kind of like paranoia.
"Look at me I don't drink or smoke or do drugs! I'm so morally ahead of the game!"
Firefighters and Paramedics don't brag and put up webpages everytime they save someone's life (well not as much as you sXe stamped in e-journals). You do the right thing because it's the right thing ... not because you want recognition. I'm not saying that's what your doing at all (I won't pretend to know your motivations), but you know what I mean. Everyone's got vices in some form or another.
If you're gonna make a choice, do it for yourself, not so you can wear a digital badge or merit. You're life will reflect your achievements.
If you fail and get drunk or something else along the way ... well you're perfect. Welcome to the club. If you feel guilty or bad about something you did ... don't do it again. Simple! You know your limits!
Just to clarify, I know you're not motivated by status, and shouldn't have equated you with people who were.
We've talked before and I read your journal now and again. Next time I won't get on a soap box, but ... I still think you are cut out for whatever you feel like, but if you choose not to do something you shouldn't consider it a failure.