1) No matter where it itches, you can scratch it.
2) If you are in public, you can go to the bathroom, and no-one is offended!
3) No-one notices if you have hair growing from weird places as you grow older!
4) Personal hygiene is a Blast! You don't have to take a bath every day, and you don't even have to brush your own Hair!
5) You never have to pay for lunch!
6) You never have to worry about your table manners.
7) If you gain weight, it's someone else's fault!
8) No one thinks less of you if you pass gas in public. In fact some people will think it's cute!
9) You can spend all day just Sniffing Stuff!
10) Who needs an expensive entertainment system? A Bone, and an old shoe, and you're happy for Hours!
If Reincarnation really does exist, I want to come back as My Dog!