[mephitix]

grid-gap is annoying to replicate/hack in flexbox. Although the column-reverse/row-reverse feature in flexbox is awesome.

Two big things in grid come to mind that make me use it much more than flexbox: grid-template-areas, and being able to overlap cells using lines.

In general, having a flexible first-class 2d layout is much easier to work with and change later than having nested 1d layouts.