It's that very thing I've consistently had lingering thoughts about where my own photography is concerned. For a long period now it's unavoidable for me even when looking at work by photographers I hold in very high esteem.
I guess that when something becomes easy to do, and it's personal as against being made for somebody else, then there's a loss of judgemental capability concerning the thing being produced. It goes something like this: "I want to do it: that's good enough, so I'll do it because I can." However, once done, there's no external measure applied to gauge success or failure to meet expectations. That leaves room for doubt, and after a while, doubt becomes a way of life and reduces the joy in the activity.
Sadly, it's back, once again, to Terence Donovan's quotation about the most difficult thing for the amateur being finding a reason to make a photograph. As a retired pro, it's exactly where I've found myself ever since retirement. On the one hand it fills time, but on the other, one can't escape the realisation that it's really been a waste of that precious time.
In essence, photography, even as life, requires genuine purpose.
Rob