ehhhh
i'm sorry, the background gradient colors were really nicely done, and the animation was ok, it's just that the characters and objects were just really sloppy and not well done. The characters looked so unfinished, like test drawings, and not good ones either. That kind of test drawing look you had looked especially bad when you combined it in scenes with fully drawn and colored in objects like the coffin, it just looked like laziness to me. Also, a few things ruined the mood, like the obnoxious Newgrounds license plate in their, it seems like every flash nowadays is getting branded with NG somewhere in it. Also you misspelled 'loneliness' which you could have easily looked up.
Aside from that, I thought it was going to be just another one of those stories where you see the life of one person from birth to death that's really unoriginal, but i did like the fact that you had the stories of the different generations intertwined, that's something I haven't seen before. Ok piece just put a bit more effort in.