That's a snapshooter talking ....
There is frequently more 'artistic merit', by way of prompting a emotive response and communicating a feeling, in a 'snapshot' than there is in an awful lot of 'art' photography.
When I look at a 'Snap-shot' of my grandmother? My daughter when she was a baby? my mother when she was younger? So many 'snap-shots', I have a connection to the subject, I am involved with the photography, and it stimulates far more of an emotive response in ME, than when I look at yet anther romantic portrayal of a rock on the beach, or a cottage in the country, or or or whatever... no matter how beautiful they may be, no matter how inspired the photographer..
Show me a stranger's 'snap-shots', in which I have no connection with the subject? Still, frequently there is a purity, an honesty a lack of pretension, and in the 'snap-shot' a revelation of a non artificial alternative reality to which I am not a part, that stimulates a more profound emotional response than yet another, frequently pretentious, contrived, and significantly un-engaging 'art' photo that usually fails to do any more, then simply be aesthetically innocuous.. "oh, that's 'nice'" and onto the next bit of visual grazing...
The 'Snap-Shot', is to my mind, probably the most emotive application of photography, and where the medium's strength is greatest.. and yet so derogated by so may 'serious' photographers, where it probably ought to be embraced, venerated and promoted.
The purpose of photography is to make photo's; the purpose of photo's is to be looked at; Few go trawling through flikr to look at pleasant portrayals of waterfalls and sunsets; but, many do pester their mates on face-book every week-end for the 'Snap-Shots' from last nights party.... which begs the suggestion, that the candid, the snap-shot, as a genre, probably has more 'purpose' than art-photography.. I certainly think so..