death

so my uncle alferd died and my dog was put asleep yesterday, sometimes i just dont understand about how life goes. why death has to be apart of something..i mean.. we have enough people in the world.. why cant we just live at the age we are at.i mean i would have no problem living llike this the rest of my life. im 19! i dont know.. feeling this way ..it sucks..i hate it.. i do not know what to do to handle my tears and this pain that i am having...