What are everyone's thoughts on natural disasters being overall beneficial for the environment?

Just because forest fires occur naturally, and would spread naturally without human intervention, does that necessarily mean they are beneficial for the earth?

If humans didn't try to put out forest fires, and perhaps by chance many lightning strikes caused fires all across the northern west coast within a small timeframe, would this still be a net positive for the ecosytem?

I don't know enough about the equilibrium.