That option is called "relativenumber". You can go back to normal numbering with "set number". I find it very useful myself, though, to quickly move to a line w

That option is called "relativenumber". You can go back to normal numbering with "set number". I find it very useful myself, though, to quickly move to a line with relative commands such as 10j, or select ranges, delete a number of lines, etc... The only case in which I really need absolute line numbers is when jumping to a line for an error message (luckily G key will always use absolute line numbers).