I grew up in a military family. My dad was gone for extended periods of time-sometimes as much as 3-6 months due to his work. Military familes get used to that, it's part of the deal. Our troops in Iraq and Afghanistan are deployed over and over for months at a time in combat. My dad wasn't in combat, just on temporary assignment, so we didn't have the added stress of worrying about him getting killed in combat. During Viet Nam, troops served for a year over there without the convenience of the Internet or Skype which today's troops often have. Their families often had no idea what was happening to them for extended periods of time. Modern communications make it much easier, regardless of the reason, be it military or civilian work, such as business or government service.

I don't have any real advice except this-if you can't figure out whether or not it's okay for you to go, it isn't.