From the comments, I can see alot of bashing from organic growers
If you're not eating it as a daily source of protein and carbohydrates, and since smoking 2 or more plants worth of lung damaging carcinogens and mind-bending hallucigens every year is not what you would consider being a "healthy-minded individual", then
"organics" has nothing to do with it!
It all comes down to performance and maximizing yield, so if using organic fertilizers has significant benefits,
which it does, (i.e. healthier plants, better disease resistance, higher drought tolerance, supplying micro nutrients, providing a bio-friendly growth environment for beneficial microbes and Mycorrhizal Fungi, etc.) then organics do play a major role in having a successful grow.
I use a combination of both.
Note: a lot of these synthetic enhancers are a huge money grab, and provide only marginal to somewhat good results. I do see a benefit with fast-growing and therefore nutrient-starved auto's (or when using hydroponics or growing in intense tents).
I grow all my plants outdoors, so i only use synth's judiciously on my photos, and then slightly less-than-recommended doses for my auto's, to ensure that i don't chemically burn them.