If you go to dinner with a friend who has chicken and water while you have the lobster and wine, then your friend might suggest "let's just split it" as a way t

If you go to dinner with a friend who has chicken and water while you have the lobster and wine, then your friend might suggest "let's just split it" as a way to simplify the math and that's fine. But you shouldn't suggest it. Similarly, an offer to split things equally might well be a good way to increase good will, but only if the idea comes from the person who's definitely contributing over 50%.