explain it to me, so i understand

Today I have a lot on my mind, as always. I was talking to a friend who pointed out that I always say, "I just don't understand" . I have so many things that bother me. Things beyond my comprehension. Maybe you can help me to understand, so please if you have any insight to the following feel free to let me know.

~I don't understand why Heather had to die almost a year ago leaving her two young daughters without their momma.

~I don't understand why babies are born only to die from a extra chromosome God fashioned on their DNA.

~I don't understand how we can love with all our hearts, give all we have to another and they can look at you and say your all just wasn't enough. And walk away without looking back.

~I don't understand how a couple can try so hard to have a child, they have so much love to give and they never conceive yet there are babies out there who need to be loved but are neglected.

~I don't understand why we turn ourselves inside out to please those whom never acknowledge our hard work.

~I don't understand how when we are in a difficult place in our lives, that people tend to forget us after a day or so, I mean does the need for love, support and compassion run out when the casserole is gone? Does the grief and pain end with a full stomach? or do we need up lifting daily?

~I don't understand how when a person we love is in need of truth we tend to want to cushion the blow and sometimes veer away from honesty. When what they truly need is to know the truth.

I found this song that says it much more beautifully than I could ever,

Just a few questions I have
Clay Walker
(Ray Scott/Phillip Moore/Adam Wheeler)

How in this world can we put a man on the moon,
And still have a need for a place like St Jude's?
And why is one man born,
In a place where all they know is war?
An' a guy like me,
Has always been free.

An' how can two people who built a lovin' home,
Try for years an' never have a child of their own?
When somewhere out there tonight,
There's a baby no-one's holdin' tight:
In need of love.To me, that don't add up.

But I wasn't there the day you filled up the oceans.
I didn't get to see you hang the stars in the sky.
So I don't mean to second guess you,
Or criticise what I don't understand.
These are just a few questions I have.

An' why did my cousin have to die in that crash?
A good kid, only twenty two, I still wonder 'bout that.
It seems unfair to me,
Some get the chance to chase their dreams,
An' some don't.
But what do I know?

I wasn't there the day you filled up the oceans.
I didn't get to see you hang the stars in the sky.
So I don't mean to second guess you,
Or criticise what I don't understand.
These are just a few questions I have.

Why do I feel like you hear these prayers of mine.
When so many oughta be ahead of me in line?
When you look down on me,
Can you see the good through all the bad?
These are just a few questions I have.