Sugar Gliders: Do I really need more than one?

This can be a confusing topic because most people recommend getting at least 2 sugar gliders, yet others say it's fine to have only one if you give it enough attention.  So who is right?

Technically a single glider will survive on its own, but it will never be truly happy.  It won't drop dead from loneliness, but will become depressed and likely over-groom itself, leaving bald patches.  Sugar Gliders are much happier with a buddy.  They are colony animals and live in large groups in the wild, so naturally they would want company in captivity as well.  If you do choose to get only one sugar glider you will need to spend at least 4 hours a day with it to even come close to fulfilling it's emotional needs.  That doesn't mean just carrying it around in a bonding pouch or pocket during the day, you need to be there to play in the evening or at night when the glider is awake and active.  Obviously this is not an option for most people, so the best thing to do is get another glider.