What are the 5 reasons not to rely on outsourcing or contracting out?

What are the 5 reasons not to rely on outsourcing or contracting out?
Lack of accountability, lack of control over quality and/or customer service, potential exposure of liability for acts of contractor, customer perception of lack of being invested in providing the process or service, potential loss of trade secrets/client list.

I just made these up but I think they are true.