sorry but there are too many monsters for me to find this fun. I spend more time clicking on monsters than clicking on blocks. simply because the miners are useless at defending themselves.
Oh, don't worry, by the time you get down to about... maybe level 40-50 and get a bunch of upgrades you won't spend time clicking on monsters either. The screen gets so busy that you'll lose track of your cursor every few seconds, so there's no point in trying to click anything.