Just cry when you feel like it.
I called my parents most of the days too (when they were still in Malaysia. Soon after they left for a posting overseas), but because I was too shy and afraid that I was exagerrating, I held back my tears at the end of the line until I finally hung up.
As I grew older I have discovered that holding back tears is painful (literally! If feels like huge pressure in your jaws or something), and the emotions that I held together was really not good to be kept inside me. That was when I decided to throw away the misconception, and that was when I acknowledge that it is after all, OK to cry.
I have to admit though that I still do feel shy, but most of the time I just let it out. Its relieving I tell you, especially when the emotions were already building up. When I am done with my tears, I felt refreshed and ready to accept whatever bad or good things that comes after. I became strong again.
So, yes, to me crying is therapeutic. If you come to me for emotional support, I would encourage you to cry when you feel like it, because it really does helps to clear the mind and brings a balance to the emotional overload.
So how about you, do you cry or most of the time you just hold it back and try not to? When was the last time you cried?