get one. dogs are awesome. you should probably quit your job though, unless you can take your dog to work, or would like to spend every hour of the day you aren't working with your dog. i wouldn't say dogs are tons of work, but they need to be with other living organisms.
if you want a lazy dog that will be relatively happy without much attention, get a greyhound. if you want a smart dog that will do whatever you want it to, but will drive you insane if you don't give it a ton of attention, get a border collie.