Purpose, meaning, spirituality, religion, motivation, goals, dreams, aspirations. If you really think about it are all fabrications. Man-made, and predominantly in your head, things not of the physical world. I would say that anything your mind can think up isn’t real. Go with me on this.
Inconsistency is the opposite of habit. Inconsistency is where you have too many variance or contradictions in what you are currently doing. An example talked to death is a diet plan. You do it for a little while, week, month, then oh my god, who would have thought that you would get back to your original weight after you stopped? Shock horror?! Being inconsistent with your days, your weeks, months and years is a great way of going nowhere. Rather than the contradiction about altering nothing, it’s when you keep changing what you are doing that you end up nowhere.
It’s a hard and easy question, depending on how deep you want to go.
Many people want to capture a moment, archive a memory. Some people want to express themselves or other peoples stories. Some want to show you something, be it a travesty or crime to a shiny object to entice you to buy it. For others capturing a photo is meditative or therapy. We all have our own reasons to capture a photo.