I tend to want to see things that are of their time. I'll listen to stuff from way back in my youth, but I wouldn't particularly want to see the artists perform them now. My old favourites from my youth onwards were Tubeway Army / Gary Numan, and Numan still makes albums and does tours today which gain rave reviews. In fact, I think he was playing The Roundhouse in London tonight. He played Liverpool and sold the venue out a couple of weeks ago, but I was never tempted to go. For one, I hate the old school reunion vibe with his fanbase so distance myself from it. I did it all in 79-81 when he was at his peak. I went to Wembley Arena in '81 to see his supposed farewell show, although he did rethink quitting later on. It was of its time, I did it then and loved it, but I don't want to redo it now.
My other major, and more enduring, favourite is The Cure. Again, I saw them a number of times when they were at their glorious peak. They've toured ever since, do massive shows and still produce albums. They bossed Glastonbury last summer too, but I've not really been that tempted to buy tickets to see them these days.
Would I want to see Roxy Music /Bryan Ferry now? No, not really. For me, bands I like tend to capture the spirit of the age as I perceive it at the time. Once that time has gone, it's sort of gone. I'd rather have my memories as they were, untainted by thinning hair, aching joints, wigs, pot bellies and nostalgia trips.