Wait until you discover that you don't have enough eyes for portals or eyescream. Then the forest will be deathly quiet.

Most biomes seem overrun when you enter them for the first time. Then, after you clear out an area fewer mobs will spawn back, and you'll wonder why you ever thought it was hard. Unless it's night. Although skeletons have started to respawn around crypts. They didn't do that before. Get the dwarves and the skellies to fight each other to get them off your back.

The raids are just luck. They don't usually go that often. You "rolled a one" several times in a row.