Thread: Why semiautos

So a question, what would be your reasons for using a semiautomatic for hunting or pest control over a bolt action.
The only ones I can think of are for pest control as in a target rich environment you can transition quickly between targets, you can rapidly follow up on misses especially as often your shooting position is less than ideal.
Can anyone add anything else to the mix feel free to think centrefire as well as rimfire.