All the photos you directly post to Google+ are in a "Photos from Posts" album, which will grow quickly out of control for people who take more than a few pictures. There's no chronlogical view of Picasaweb photos, not even anything like Flickr's Archive feature, which is more geared toward photo-a-day projects than toward nostalgia. You certainly don't have anything like Snapjoy or OurDoings to automatically organize a backlog of hundreds of photos.

All this is true of Facebook as well, and I think it's by design. Nostalgia is often a solitary activity. What social networks want is interaction, so they're going to steer you toward whatever's been uploaded/commented on most recently. Interaction is what grows social network usage.