Nostalgia can be a narcotic. Lately I’ve been going through the accumulated evidence of 50 + years and wondering why I kept it even as each bit triggers memories I’m glad to have. Do I really need this gew-gaw? This piece of paper? This book or album? Part of me can’t bear to part with any of it, but the practical side of me is starting to sort and allocate in anticipation of the time I just have no more room, no more interest, and no further use. I’m already cutting back on acquiring more. I have enough music on my shelves to last another couple of decades, by which time I could start all over.…