I have photographer's block and it began with Instagram.
In part, it's because the age of Instagram has brought a perception of photography (the act and its product) as a littering. Cameras and pixels saturate our physical and virtual spaces.
There might be a sense of justification when you're creating something actually new, but there's a self-awareness that my cold, orthogonal compositions don't qualify.
Instagram obviously isn't to blame. More likely, it's my own tendency to perceive photography as performative. It is, but that perception coupled with a subconscious feeling that performance is for the very talented creates a downward mental pressure against which it's hard to find motivation.
This mechanical process of filtering the spacial and temporal mess of reality into a balanced two-dimensional stasis is intrinsically enjoyable. Surely that enjoyment should be motivation enough?