why things should not surprise us

Everything that can change will. This maybe a gradual change this maybe  change like a light switch or it maybe a gradual change then suddenly switch. The only thing that does not change are natrual laws.So if all things that can change will (and this is something you must be honest with your self even if it hurts )why are we surprised when they do? Lets always be mindful of change but just because they do change does not devalue them less its the fact that they will change makes the present more valuable as you only have a fixed amount of of time to enjoy said things. This is why having 1 life makes it even more important to be compassionate. You cant exactly try again but if your actions have been good then you will leave a  good legacy but even this will one day die.We only have 1 life lets make it a happy one with as minimal suffering as possible