Is there anything good about separating?
Yes there is.
Parents who spend a lot of their time fighting when they are together may have more time for you when apart.
You can have the best of both parents even if you cannot have them together.
It can take time, but often when parents are separated or divorced they don't fight as much and are able to talk to each other again. This does not mean they have forgotten all the things that pushed them apart, but they might not feel so upset or angry with each other.
Sometimes you will get to celebrate special occasions twice or celebrate things in new ways.