Heard an interesting interview on a recent science show (abc rn) podcast with a fellow who has been studying rain, and his findings suggest that the whole rain cycle isn't as straightforward as we'd thought, with water coming from the ocean into the atmosphere and then raining on the land. most rain that lands on land starts on land I guess, is this guys conclusion. He has been measuring the isotypes in different types of clouds... So, yeah, distilling water from the atmosphere is bound to have knock on effects and we definitely don't understand the atmosphere that well in the first place. I think it is safe to say though that if we plant lots of trees we will get lots of rain.