Suddenly,what kind of sickness is the worst? I reckon that is losing memories. The patient will not notice anything, maybe he/she can get back all happiness he/she lost before. But who is the saddest person? Must be his/her beloved one. It is too hard to imagine what is going to happen if it's really happened in my real life. I am just thinking of this, I can't stop my tears. It is painful while he/she won't remember you anymore. It is much hard to accept the one who 's gone. I am too selfish but I don't want this happen in my life or my family. Please god ,don't do that please. I am begging you.