Again, I think it is important to remember WHAT exactly are we comparing. I am not comparing a) throwing coffee grounds into landfill, to b) using coffee groun

Again, I think it is important to remember WHAT exactly are we comparing. I am not comparing a) throwing coffee grounds into landfill, to b) using coffee grounds for cement. I am comparing a) collecting coffee grounds and use them as a fertiliser, vs b) collecting coffee grounds and using them as an ingredient for cement. Essentially, if you can collect coffee grounds for cement you can also collect them for all sorts of other uses. What I am saying is that, once you went through the trouble of collecting coffee grounds, there are better ways than to use them for cement.