There is still plenty to mess up with soil, especially if you listen to the "experts" on here.
Yes, the only things I care about (aside from quality) are money in vs value out as well. I have an excellent idea about how much per month this costs me, and I keep detailed records about plant health, harvest, environmental conditions and my own observations.
Uh huh, so you ran aero and quit it? You did all forms of hydro except nft and aqp.
Got pics of what you're growing now or no? I like to verify that the people I am talking to can, in fact, grow healthy plants.