If you like to play in person, but don't like the expense and time of physical terrain, wan't something nicer looking than wet erase on a chessex map, and want to have hundreds to thousands of maps available instantly, plus have a way to manage fog of war easily for an in person game, and still want to use minis, it is great. It was the best quality-of-life improvement I ever made for running in-person games.
It is cost effective compared to buying physical terrain and instead of buying or subscribing to a VTT, you can get table tools for free.