I don't own a dog and I guess this is why.
The wonderful creatures are so sweetly loyal and they get so upset when you're not around. I would love to have a dog so much but I think I'll wait till I retire so I can be there all the time. My four kitties, even though I know they miss me when I'm at work really don't seem to mind my absence that much - unless I leave them for an extended amount of time - which I have done and usually find some presents in the middle of the couch or my bed