Ext4 is the most useful for my work

Ext4 is the file system I am using. It is stable. I like it because of its stability. Other file systems appear to be too new.

It is better to use Ext4 instead of the other file systems such as Btrfs.

Btrfs is too new and can cause serious problems as some people suggested that it would be hard or impossible to delete files when the disk was full.