I'm willing to accept a bit of inconvenience in exchange for the savings in size and weight of the OM lenses vs. Canon lenses.
Also, it forces me to slow down and think more about what I'm doing. For me, shooting digitally with auto-everything makes it too easy to spray and pray. I feel that my best work was done in the '80s and '90s, when almost every shot was incident-metered and bracketed.
I find that the focus confirmation on my Fotodiox adapter works so well at apertures up to f8 that when working outdoors or in good light I don't need to open up to focus and then close down to shoot. After f8, it doesn't work at all. Does anyone know why this is?
All of this, however, is just an intermediate stage on my way to a Sony A7.