Tuning your guitar

I know, I must have too much time on my hands, but I was wondering if anyone "tunes" their guitar. It makes sense that the wires are the same size, and the same length. Shouldn't they play the same note? I figure that it must let you know that the tension is the same, correct? I haven't tightened the wires on my most used frame for a long time, so I tightened it up today. I tried to get about the same note. Am I crazy?

Makes sense to me - that way they'll all have the same tension. Do it do it - no.