Do you really mean /home or /Users? Only /Users is standard to OS X. I would put your home directory there. They may create /home if it's required to exist f

Do you really mean /home or /Users? Only /Users is standard to OS X. I would put your home directory there. They may create /home if it's required to exist for compatibility with other Unix standards. And since an OS upgrade probably has a checklist of things that must succeed (such as the ability to "create" /home), they feel forced to preserve whatever might have been there already before "creating" it again. On my machine, /home exists but it is completely empty.