5mg is a low dose and if, as others have commented, you take one occasionally you should be fine.
I'm a great fan of benzo and opioid type meds and could probably get addicted if someone would give me sufficient access. Thankfully that is not going to happen while my very sensible GP is at the helm. She keeps me on a very short leash and I'm too lazy to chase illegal sources so I keep my meagre supply for times I really need them. It is nice to be able to sleep when I've been on a three day anxiety binge and I can get pretty wound up when I'm under pressure and really not wanting to have a test or procedure. A valium can help. Its really in everyone's best interests on occasions :)