How do you usually use the terrain tools? And how often?

It is an nice tool to have no doubt but it depends on the size of each lot how much flexability you have within that lots constraints as you cannot alter that lots size to get what your true vision for that lot but it still an good tool. I have yet to use it as I am disillusioned about Sims 4 and hardly play it now for the cloud has came down and I see Sims 4 for what it really means to me.