I always wonder why do we take pictures? I understand that sometimes we just want to remember the moment and we want to preserve it so that we can enjoy the feeling later. Looking pictures always make me feel sad, because i can't enjoy that same thing again,I have came across several cases where people start clicking picture of their food, clothes etc but I prefer enjoy the moment up to the brim rather taking out my phone and start clicking pictures. Is it necessary to take pictures every time?
This question is more like "Why does a dog move its tail?" Some people answer that for the obvious reason the tail cannot move the dog! Then an obvious answer to the question why do we take pictures might be because pictures aren't photographers! When we ask "Why do we seat?" We might get simple answers like "Because we are tired." Or "Because there is a space to do so." The second answer makes more sense-obviously. In the same fashion we can give a multiplicity of answers why do we take pictures or why do we do anything. Descartes posed the statement "Cogito ergo sum" proving his own existence. Kant postulated the Noumenal World, an idea from the Greeks, like the Theory of the Forms. There are indeed deeper questions than to ask about why do we take pictures, etc. The fact that our senses are finite, and that we move around our own definite Phenomenal world, would be enough to convince us that no matter what we do, its is impossible to know for sure what is real and what is not. That is, of what exists and exists not. Only relativism give us our own subjectivity. Indeed seeing is believing. As to why do we take pictures with our camera or phone: "Because we have them and we get happy when we take them." The irony is that no pictures can be taken beyond Phenomena.
The reason I take pictures, is not just for me to view them latter. Having the moments captured, allows me to share them with other people,not only around my vicinity, but even across the world! I can use them to send information, drawings, designs, etc. to anybody anywhere! They provide me an avenue to communicate with people that are not at "arms length" to me, or in the same time zone.
Obviously, if I were to spend all of my time just taking pictures, I would not have time to do any of the things I mention above, or any thing else - which would be very stupid! You can't be taking pictures just for the sake of taking pictures. It has to be a means to a (useful) end!