As you might know, GURPS, Fantasy AGE and many other RPGs only use d6s.
It does take getting used to but the incremental average damage output is better with 1d6 (4), 2d6 (7) and 3d6 (11) when compared to 1d6 (4), 1d8 (5) and 1d10 (6), for example. When you add possible Boon dice and weapon...