story courtesy of potato_heart:

We are all born with a lock in our heart and a bunch of keys in our hand.. Unfortunately, none of us hold the exact key to our own heart to unlock and set them free.. but we could unlock others but not all.. we took our keys out and try unlocking people that came across our path.. sometime our keys dont match their locks, sometime we fitted in the key and thought Lady Luck arrived.. the lock just wont open.. sometimes we tried to force our way thru but found out later instead of helping to unlock.. we created a disaster in other's life..a broken key with half stuck inside the lock.. sometimes we let the correct lock slip past under our very noses cos we are too busy trying the wrong locks.. and there are times when the three elements ( time, place & human chemistry) fall neatly in place and wola..  everything seems right.. church bells ring... babies cry.. and just when we slipped our minds on maintaining the servicability of the rusty lock and key.. somehow someone with itchy hand meddled with it and wooolllaa again.. the rusty lock is locked and the rusty key sticks there but cant open up the lock again... the only thing the locksmith can do is to saw away the old rusty lock, replaced it with a new lock which you dont hold the key and the whole cycle repeated itself... of course for those who did manage to open up lock and maintained the servicability...their effort paid off handsomely