parents splitting up, is the end or a new beginning?

So my parents are apparently splitting up my dad and i got into an argument this morning and he announced that he was done and he is leaving then i come home and my mom is outside crying seems they got into a fight themselves and she told him she wasnt gonna beg him to stay i am proud of her because shes standing up for herself i really dont know why my dad wants to leave us so bad but im to the point where i just wish hed leave and get it over with im tired of walking on eggshells around him all the time so is this really the end or is it just a new beginning i guess only time will tell.