Mistakes in a hope

Ever wondered how we hope for the good things in life and imagine them to last forever..
I come from a conservative country but when i see the epeople from th emodern world, how the fall in love and they fall out as quickly. Why do we begin with the thought that its gonna last forever (read till we die) when it won't .. hell, it doesn over last for a week at times.
Why do things have to last forever for us to give us a sense of comfprt. wont it be easy if we cud jus hope it wud last for few more moments..
We spend the present , worryign about future and well it makes me sad.
we wish our love would last forever and then we see the hot chick with absolutely amazing knockers and the love flies out of the window. And crying, whining, grumping are a side-effect..
whats with forever, we shud have a more believable word like forweek, foramonth...

Back to my original thought process,
Have you ever thought that may be everything around you is an illusion. How do u reckon Murphy's law exists. We make it exists. we make things happen. If thats true then we create out reality and if we do that, then this must be a dream or the manifestation of our mind. Now thats goona bring a lot of criticism from a lot of so called OPTIMISTS.
Think about it, why people whoi believe in the power of sub-concious mind fare so much better in this world of more wrongs than rights, more murphy's law then a lunatic optimist.
I am confused for i always thought i was an optimist. And challenginf myself seems like a nice change..
But for those who never thougth about it, its a food for thought.