Well we are all different, and how boring if we were all the same, so each to their own.
So long as we can achieve pleasure and joy, and not at someone else's expense, all is good.
Piers Anthony has really only slowed down in the last decade. It seems age has finally caught up with him. I still have something like half of the Xanth books left to read.
Alas it seems I like too much, and just aren't discriminating enough to reduce my reading list enough to catch up during my lifetime. The list grows ever longer.
EDIT
I'd have to say I am far more discriminating in what I now choose to buy though, book wise. Many stories are just more of the same, especially Fantasy. And I already have a huge number to read of most genres. The drive to buy new authors is very much diminished, though I will still snap up freebies that sound good enough ... whether i ever read them or not, is another thing. Anyway, as much of what I have, is by authors I have yet to read, I guess you can say, I still have plenty of new authors ... new to me.