Har - As much as we'd like to think we are supermen, able to do it and be it all to everyone we aren't. As much as you want to know you are important, and for many you are, they aren't going to show it constantly. It is sometimes the small gestures and comments that show how they care. I agree that keeping busy can help but don't drown yourself in work and forget to live your life. Always try to find a balance. It isn't easy but it is worth it.
To everyone else, remember if nothing else this thread gives you a chance to vent. We might not be able to do much in person but we can at least support each other here. to those that need them.