to feel

I think that it's good to miss something. It proves that you love it. Example: I miss Seattle. This feeling tells me that I love Seattle :)
Also - our sorrows increase our capacity for feeling love and joy. It's like carving out a cup so that it can hold more :)
Actually I guess any deep emotion carves out a space for others. Greater capacity to feel. And I guess because Christ experienced infinite sorrow and suffering, he can also experience infinite love and joy. {not sure which came first. I guess there is no "first" with infinity) :)
Luckily we don't have to experience infinite sorrow to attain perfect love. Thanks to Jesus's atonement :)
We do need to feel sorrow though. It deepens our capacity to feel, and it increases empathy.

The deeper that sorrow carves into your being the more joy you can contain. Is not the cup that holds your wine the very cup that was burned in the potter's oven? ~Kahlil Gibran