This is only my second time using a hen for hatching, I'm used to a bator, which can be stressful after day 18! I have had the BEST hatch results from using my broody. I have silkies, and one in particular has always been a great surrogate mom for all my hatches. Last month 5 of my Silkies went broody, so I thought, "hey, let's give the other girls a shot" I split up 20 eggs between the hens--it was hilarious to see them move the eggs around to different boxes and take turns (I marked the eggs so I KNOW they were moving them to different boxes) a couple of the eggs hatched early, and the girls didn't budge from their boxes-- wouldn't even let the babies under them! Thought it was just a coincidence, they were focused on the other eggs, or that there was something wrong with the preemies, but 19 eggs hatched and the other hens still would not mother them! Could not be bothered. Maybe they're just inexperienced moms. I'm sure this is unusual-- now my one great broody has more chicks than she can handle! So everyone is now inside under the heat lamp or taking turns with mom. Healthy as can be, but a lot of work!
So, the point of my story is..yes, it's way easier to let nature do the work! But don't make the same mistake I did & set too many eggs!