I used to share this view, and there’s certainly nothing wrong with it, so long as you don’t change your software.
In my case, however, as the result of a major software update (Audirvana Plus on OS X), it became apparent to me that having a way to edit/embed metadata within track files would serve me well over the long term, and so I converted all my iso’s to DSFs. I had a fairly extensive collection of iso’s, so while the conversion part was pretty easy, the retagging was quite labor intensive. Still, a few months after the fact, I feel it was worthwhile.
(If you or anyone knows of a Mac-based way to edit/embed track metadata directly in iso files, I’d love to know about it.)
–David