Nothing with a lot of users is ever going to be shut down (most features of inbox are ported back to Gmail so that one doesn't count imo). Therefore I wouldn't

Nothing with a lot of users is ever going to be shut down (most features of inbox are ported back to Gmail so that one doesn't count imo). Therefore I wouldn't worry about photos. You can help dredging up Reader for decades if it makes you feel better, but that was clearly a fringe product and the fact that no clear alternative arose to replace it testifies to the fact that it represented a pretty small/unprofitable market.