Fort Minor - Where'd You Go Lyrics Meaning

I think this song is about families who are dealing with the stress of one of their members who is away from home for an extended period of time. This may be for many different reasons -- the ones in the video show one where this couple's son off to the army, another one is where the parents are divorced, and the third is a family where the guy has a job (baseball player) that keeps him away from his family. What I'm confused about is whether the song is sung from the woman's or the man's perspective. I think it's from the woman's perspective, but I could be wrong. Powerful song!