Straightedge is a philosophy based on self-preservation and abstinence from the "poisons" (alcohol, other drugs, cigarettes, promiscuous sex, etc...) many consume each day. This is a philosophy which is a major part of our beliefs and we think it makes each one of us stronger individuals.
By being straightedge, we discipline ourselves at our own will. It is much harder to reject the popular, indulgent pass times that most kids and adults (sadly) participate in chronically, than to follow the crowd. I know from experience, that by being straightedge, I have avoided learning many lessons the hard way in life.
I have also learned a lot about myself and that by being sober, I am able to concentrate more on living my life to the fullest, rather than stumbling through it, unaware of my faults. Deciding to go straightedge is purely something someone should do for themselves.
Although some identify straightedge as a trend or as a shallow belief to label yourself by during a brief instant in one's life, it is not meant to be that way. Straightedge should be a life-long commitment. It is not in anyway a religion, but just a simple philosophy to live by and be proud of because it takes a lot of courage and will to be straightedge.