Although I generally CANNOT FUCKING STAND poetry, I make an exception for the gloriously bleak Phillip Larkin and his 'LIFE IS BOREDOM THEN FEAR' type themes. This is his magnum opus on death, 'Aubade'. I love his description of religion as 'That vast moth-eaten musical brocade created to pretend we never die' -perfect 
 
Aubade
I work all day, and get half-drunk at night 
Waking at four to the soundless dark, I stare. 
In time the curtain edges will grow light. 
Till then I see what's really always there 
Unresting death, a whole day nearer now, 
Making all thought impossible but how 
And where and when I shall myself die. 
Arid interrogation; yet the dread 
Of dying, and being dead, 
Flashes afresh to hold and horrify. 
The mind blanks at the glare. Not in remorse 
-The good not done, the love not given, time 
Torn off unused - nor wretchedly because 
An only life can take so long to climb. 
Clear of its wrong beginnings, and may never; 
But at the total emptiness for ever, 
The sure extinction that we travel to 
And shall be lost in always. Not to be here 
Not to be anywhere 
And soon; nothing more terrible, nothing more true. 
This is a special way of being afraid 
No trick dispels. Religion used to try 
That vast moth-eaten musical brocade 
Created to pretend we never die 
And specious stuff that says No rational being 
Can fear a thing it will not feel, not seeing 
That this is what we fear -no sight, no sound 
No touch or taste or smell, nothing to think with 
Nothing to love or link with, 
The anaesthetic from which none come round. 
And it stays just on the edge of vision 
A small unfocused blur, a standing chill 
That slows each impulse down to indecision 
Most things may never happen; this one will 
And realisation of it rages out 
In furnace-fear when we are caught without 
People or drink. Courage is no good; 
It means not scaring others. Being brave 
Lets no one off the grave 
Death is no different whined at than withstood. 
Slowly light strengthens, and the room takes shape 
It stands plain as a wardrobe, what we know 
Have always known, know that we can't escape 
Yet can't accept. One side will have to go 
Meanwhile telephones crouch, getting ready to ring 
In locked-up offices, and all the uncaring 
Intricate rented world begins to rouse 
The sky is white as clay, with no sun 
Work has to be done 
Postmen like doctors go from house to house.