RE(wind)LATIONSHIPS!!

It is often said that man is never satisfied with whatever he has. He always greeds for more. This seems quite true and can easily be related with human relationships as well as emotions. When one is in a relationship, he/she always longs for it to last forever. And if that, due to some reason or the other, becomes impossible, people break down abysmally, stuck to their past with no vision for future.
I always find it quite lame to lament over broken relationships. I consider it as a kind of greed; greed for love as it may seem. You can also take it positively. You can think that atleast you had a past with him/her, if not a future. You can simply treasure the moments you shared with him/her and consider them to be enough to keep you happy for the rest of your life. Why ask for more? Is it not your emotional hunger? Though I was never in any such relationship, I had crushes. I may not like my crushes anymore but I still relish the feeling I had for them! No regrets about anything!
Why is it so difficult to let go of past? Or rather why do people usually cling to their darker pasts than the happier ones? Just take the happy memories with you and move on. Why cannot people accept failure as it comes? Why do they run away from truth? It may be painful in the beginning but definitely a better option. And for how long can you escape the truth? It will catch hold of you sooner or later.
I never say, that never give your relationship a try. No relationship is perfect; you have to constantly work towards making it perfect. But the efforts should be put from both the ends or else the balance would be lost. Even still, if you fail to work out the relationship towards the brighter side, it is better to come out of it gracefully rather cribbing bitterly about it.
You should be strong enough to not weaken yourself by someone’s absence in the first place and never depend on anybody for your happiness. However strong the relationship maybe, both should be able to live as an individual too. It’s my policy and I religiously follow it!