do YOU take out your eggs, check on them, candle them, etc?

I haven't really messed with mine since they were first popped into the incubator, but I do wonder if candling once a week to watch the growth process would be too invasive?

More of a way of learning first hand how they develop is my interest. Or do you check them once every couple of weeks, etc?

I've not done more than just open the 'bator once a day for a cursory look to make sure the egg boxes aren't sweating, that the eggs are still plump and temps are good.