How does that line go?Oh, yes."Hey, wasn't it me who said That nothin' good's gonna last forever?"I think that is it. And it is true.Nothing in our lives is permanent. We live as transients passing through an ever-changing sea of circumstances.Two weeks ago, my blogger pal Gary Denness ( The Mexile ) announced an end to the blog he had been writing for over fifteen years. His reason was a familiar one. Blogging had been fun, but he now felt that writing his blog was just an exercise. A . . .