It doesn't matter how many times you've had to say goodbye, it never gets any easier. It doesn't matter if it's for a few days, a week long FTX, a month of JRTC or a deployment, watching my husband pack his things and walk away is one of the hardest things I've ever had to deal with. I usually do fine during the day. Of course there are things that remind me of him, which makes me sad, but I can usually hold myself together. But when nighttime comes, it's really hard on me. I can't stand to sleep alone. I know it may sound stupid, but it's true. I feel safe knowing my husband is laying right next to me.
I absolutely cannot stand when people are rude towards those who have their SO gone for "just" a week or month. So what if they miss their husband? Let them. People handle things differently. No need to be hateful or rude towards them.