i.e.

i.e.
An abbreviation for id est, a Latin phrase meaning ‘that is.’ It indicates that an explanation or paraphrase is about to follow: ‘Many workers expect to put in a forty-hour week — i.e., to work eight hours a day.’ (Compare e.g.)

Why are English speaking people still using i.e. instead of ‘ex.’, ‘for example’, or ‘that is’?

1384-English replaces Latin as the medium of instruction in schools, other than Oxford and Cambridge which retain Latin