Why do people feel sad when someone (or even some pet) close to them leaves or dies? Of course, you miss the person (or your dog or cat). But still why? I dare say that it's because of attachment, not necessarily all love. I know some readers may see it differently ~ that's all right. Here's my take. Attachment to anything in the world is basically self-centered. If someone departs from this world and you miss that person, it's most likely because you feel your loss ~ you no longer have the joy of that person's company, you no longer have that person to give you comfort or help when you needed it, etc. If you truly love that person, you would think for his (or her) sake. If you know his soul is going on to God, you rejoice for him. Otherwise, you feel sad for him, not for yourself. Love is only pure when there is no attachment mixed with it. And the heart is free only when it is free from all worldly attachments.