Ugh. If you haven't deleted your iPhoto library then you can revert to it. I moved all my images (600GB), to Capture One a couple of months ago. So glad I did.
Well it's just fortunate that Picasa does a better job with them than iPhoto or Photos. Picasa provides me with an accurate timeline, preserves titles and much more.
I can understand people who have all Apple devices liking the Photos App if you want things in sync. However, despite what Apple may think, not everyone has all Apple devices.
Although I have a number of devices I don't want Apps like Photos syncing everything so I have it switched off. My iPad is as empty as it was when new three years ago.