Sure, you prefer to use a grid. But 5e isn't assumed to use a grid. After all, 1

1 and pixelated circles don't exist in 5e. The grid in 5e is even weirder than the grid in 4e because in 5e, when I move diagonally, I don't count 1

1 - I can move 6 squares diagonally with no problems. But, if I cast a spell or use any sort of area affect, then I have to use a straight up circle that isn't actually correct on the grid.
It's this weird mishmash of Euclidian and non-Euclidian geometry, and, apparently, this is better for simulation?

If you valued accuracy, why are you using the 5e system? It's less accurate than 4e was. At least in 4e, everything was wrong by the same amount. But, I can escape a web faster by moving diagonally than by moving orthogonally in 5e. It's just totally bizarre.
And this doesn't bother you?