I did the originals thing in my youth, and tbh the fame, fortune, soulless massive gigs, endless groupies, ridiculous riders etc just got boring. A few blues covers and the Dog and Duck is heaven now....
I'm with Wot on this - its all music. Unfortunately I don't play any originals at the moment, but you never know. I'm another 50 yo (later this year) and I don't discount playing with younger musicians in order to rekindle the creative spark.