I recently deleted my Google Profile. The link explains why.
I expected consequences and I am not disappointed.
Today many of my share links to my Picasa albums have broken. The albums are still gone, but the share links don't work.
It's easy to see why. Here's a link I shared last week to one of my recent albums. I've bolded the problem (omitting the auth key)
Here's today's link to the same album ...
When I deleted my profile I removed my 2007 identity: 113810027503326386174. With the advent of G+ that identifier was the basis of shared image links. When I removed G+, those links broke.
Fortunately I hadn't shared that many albums recently. I got singed, but not burned.
I feel like I escaped the burning house of G+ just in time. Future exits will be far more difficult -- if not impossible.