A better question is, how can you not have one? So many things can happen to your home in your absence: break-ins, water leaks, frozen pipes, electrical problems, insects, mold, and storms, to name a few. Conversely, preventive measures such as storm preparation and proactive maintenance should prevent many situations from arising. Even if you have a trusted neighbor or relative nearby, having a professional who is insured, licensed, bonded and accredited acting on your behalf is a much more reliable and effective option.