I have been a devoted Aperture user since it's introduction, and didn't see a suitable replacement when Apple orphaned the app. I subscribed to CC when a new camera was not supported by Aperture, but continued to use Aperture for all other purposes. I now have over 2 years of experience with LR, and am prepared to say that it is indeed a suitable replacement, and in the years since Apple has not supported the app, that LR has exceeded Apertures capabilities.
While it was not intuitive as a novice, experience and training has allowed me to develop a DAM strategy that is capable and acceptable. I have explored alternatives in the marketplace, and there is nothing else that holds a significant advantage. An important factor is that I do not want to be faced again with an orphaned software solution. The prospect is just too painful. Adobe seems to have the highest likelihood to succeed going forward. This year I began to import all new images into LR alone.
I am left with a huge catalog still in Aperture. With a few hiccups, it has continued to function satisfactorily. It is just a matter of time until an OS update breaks Aperture going forward. I have researched the options for bringing my Aperture catalog into LR, but the process seems daunting and problem prone.
I am sure there are others facing the same dilemma. What are your thoughts for dealing with your back catalog?