Life and Death

What is it about death that we're all afraid of?
I can't answer for all of you. But personally for me it's uncertainties.
Things are uncertain. Where are you gonna be, what are you gonna do? How long do you have to wait? How will you die? When is it? Are you gonna be alone? How does it feel?
I have always been really scared of death. I have this thought back since I was a kid.
If I would ever have to decide my own scene:
I would like to finally prove that true love exist, I lived a happy life, my life impacted people (Esp those who are around me) in a positive way. I would like to die surrounded by my loved ones: family and friends, I prefer I'm not to be in pain. I don't want to die from burning or drowning. Accidents scares me. Take a good care of my body when I'm already gone. I don't wanna be in coffin. It's too dark, and deep down. I'm scared of that, and I know I'll still be. Again, I don't want to be turn into ashes. I'm afraid of fire. So, please go with the trend during Jesus days. Put the body in a small-sized cave, please give me some window. I'm afraid of dark and I can't stand a room without a good air circulation. I know I'll still be. I hope no animals or insects eating me up.. :s
I grew up in a third world country, and there is a local custom when someone's died. The neighbors/ friends/ family put the body in a coffin. They carry the coffin all the way to the cemetery, it almost like a parade. So, people on the street would know that someone's just passed away, and they could see the coffin. Whenever we had this on the street, my mom always covered my eyes. Growing a little older, my mom only needs to tell me to look away or to cover my own eyes. She said that not everybody could see a scene like this, she's worried that my little heart can't handle and I'll just faint. hahaha.. My mom is a super-protective, she's the loveliest.
I'm 21 and I've never even gone to a single death-related ceremony. There are always things came up, and I could not be there. In a way, I'm thankful of that, I don't like sad faces and tears. I will cry and be depressed. And, I believe if I ever went to such things, I'll think about death even more often than it does now.
The thing about death bothers me again, this time because I'm about to travel to countries which US, UK, and Japan have issued travel warning against them for high risk of terrorist attacks. But, everything has been set, friends are set, plans are set. I don't know what to do, really. I do still want a long, happy life. Or at least, experiencing happiness once again after a while.
This thought came up also because one of my trainers just passed away recently. And, what's so tragic is.. he was the one who taught me to do some moves, and I've never bother to do it until few days ago I did them in my living room. And, in my head, I thought about him, the news about him makes me really sad, and depressed.
God, I don't know what to do.