Why do bad things happen?

Background information:
Before becoming a mother, I struggled in my life.  I was not going down the right path, so God stepped in a pushed me back onto the right road.  He did this by seeing me make mistakes and I suffered the consequences.  I woke up.  I started living.  You get one shot at this (life) and I am messing it up! About that time my wonderful husband stepped into my life and I felt my life was perfect. I was in love and it felt great! We dated long distance for about a year, and yes I can assure everyone that distance makes the heart grow fonder.  We finally got into the same zip code, got married and settled into our happy little life together.  After a year of marriage, we wanted to start a family.  Very soon (about 2 months!) after we decided, I found out I was pregnant, my life as I knew it was forever changed.  Since the day I saw that little bean on the ultrasound to the day I held him in my arms, I realized, my life was not about me anymore, it didn't matter.  All that mattered was him and how I love my son more and more each day and I will for the rest of my life. 

So let's get me to the title: Why do bad things happen?
In February 2011 (I was 7 months pregnant) I saw a friend post on her facebook page about a family that had just lost their 4 month old baby to SIDS (Sudden Infant Death Syndrome). Before I read her blog, I was not concerned at all with SIDS or really knew that much about it at all.  Read her blog here: http://kandjstaats.blogspot.com/
Needless to say, her story is of heartbreak of losing her baby girl and hope that she is now pregnant with a new baby.  Her blog has many other "angel mommies" listed and I have read many of their blogs as well. And so many of their children died of  SIDS (death from 1 month to 1 year) and even SUDC (Sudden Unexplained Death in Children) This lead me to really start to think...why do bad things happen?  Why do babies die?  Why do children die?  Why is there cancer, accidents, disasters, war, disease??? How can I prevent this from happening to us???!! The answer.  I can't.  Bottom line.  End of story. 
I struggle with this because people say, it will never happen to you.  But what about the people it does happen to? I bet there were people telling them that and it DID happen to them! I am trying to find understanding in many things and have no explanation.  All I can do it have faith in God and know that EVERYTHING in his his hands, even if it does not make sense and causes us grief and pain. 
Romans 5:8 declares, “But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.” Despite the evil, wicked, sinful nature of the people of this world, God still loves us. He loved us enough to die to take the penalty for our sins (Romans 6:23). If we receive Jesus Christ as Savior (John 3:16; Romans 10:9), we will be forgiven and promised an eternal home in heaven (Romans 8:1). What we deserve is hell. What we are given is eternal life in heaven if we come to Christ in faith.
Yes, sometimes bad things happen to people who seem undeserving of them. But God allows things to happen for His reasons, whether or not we understand them. Above all, however, we must remember that God is good, just, loving, and merciful. Often things happen to us that we simply cannot understand. However, instead of doubting God's goodness, our reaction should be to trust Him. ”Trust in the LORD with all your heart and lean not on your own understanding; in all your ways acknowledge Him, and He will make your paths straight” (Proverbs 3:5-6).

Being a new mom, this is very hard for me to grasp.  I am a worrier.  I worry all the time.  I check when Logan is napping to see if he is still breathing.  My husband thinks I am crazy, but I cannot help it.  Logan is my heart and soul.  I miss him SO much when I am at work, I can't fathom what I would do if I lost him.  Even after 6 months he has been at daycare, my heart jumps a little if I see them calling me at work.  I can't help it! I know its crazy, but that is how I am and I am trying REALLY hard to just enjoy life and not worry so much.  My husband is the COMPLETE opposite.  He doesn't have a care in the world! I would like to overcome this struggle and "let go" but it is very hard. 

All I can do is this:
Live my life everyday to the fullest
Love stronger
Cherish EVERY moment
Make memories