By "non-SLR" do you mean compact cameras?
If so, I'd guess the reason the pictures look different is because people tend to use compact cameras for different things than 'proper' cameras like SLRs; they see SLRs as for 'serious' (i.e. possibly boring) photos.
(edit: the reason I ask is that there are cameras like the Olympus EP3 or Panasonic GH2 that aren't SLRs, but aren't compacts either, and probably aren't used the same way compacts generally are.)
Also, I would guess that when you think of 'SLR photos' you're thinking of landscapes or portraits or
something, as opposed to pictures of nights out, or snapshots from around the home. I also like pictures of people in their surroundings, rather than headshots.
non-SLR photo:
SLR photo:
I guess my (not particularly good) point is that the camera used to take a photo has less to do with how it looks than the reason for taking the photo in the first place.
edit:
I realise I'm not exactly common in that I tend to take snaps around the home using whichever camera (compact or SLR) I happen to have nearby. Occasionally I'll choose the SLR specifically, if the picture I have in mind calls for a telephoto lens (the compact only has a wideangle), but not often.
Apart from that, I'm with you on the 'snaps' thing. Landscape photos have to be really good to interest me, whereas pictures of people or where those people live* I find interesting almost by default.
* by 'where they live' I mean where they live their lives, i.e. the city they live and work in, the places they go to, where they work, not just their house.
edit:
I will stop editing this post now
:$EDITED: 8 Sep 2011 09:52 by CAER