The biggest benefit of soft proofing is that it saves ink, paper and time before the final output. Usually, there will be lots of revisions of “colors” before the final output, and each requires lots of ink, paper and time before you get a satisfactory hardcopy proof. Doing it in a digital way, such as soft proofing, can minimize the waste of ink, paper and time during the revisions. However, this is not saying that soft proofing can replace hardcopy proof entirely, but can surely save most of the iterations in between. The end goal of this is for producing accurate hardcopy proof that can be used for final approval, official proposals, and legal purposes.