Hydro gets high yields, fast growth, good pot, you know exactly what nutrients are present, ect. And there are organic nutrients for hydro.
But I like soil, it requires more guess work, can handle higher pH, and most important (to me at least) is that whenever the first pot plant propogated, until not too long ago, marijuana grew in soil. It's the way things have been for the species entire existance (until whenever other methods of cultivation were produced). So that makes me appriciate soil.
Dont get me wrong hydro is cool, I have much respect for hydro, Hydro comes over to take bong rips all the time.
Peace