Thank you all for the replies. Really helpful.
I didn't know the nest can grow back! The best approach is indeed to defend instead of trying to clear the entire map.
And I see there is a lot of options to destroy them late game and I was trying to do that early/mid game.

First game ever! Playing 100% on default settings to get to know the game. Looks like I'm playing a completely different game than anyone else. When I see youtube videos is all about factory developing and logistics, rarely see anything about killing nest. But that's all I'm doing.

First I've been ...

Is there a way that when I select an item to build the inventory of the player will auto hide instead of stay in the middle of the screen where you can't see where you are putting the item? I know I can press E to hide.
Also, is there a way to make the item leave your hand automatically when the ...