If you refer to worldly interactions as vyavasthit (result of scientific circumstantial evidences), then all the hopes (aasha) and insatiable desires (trushna) will disperse away.

By the relative viewpoint (vyavahar), you (relative self) are the doer and by the real viewpoint (Nischay), You (as the Self) are the non-doer. This is what Lord Mahavir says.

When is 'our' worldly interaction considered good? It is from the moment 'we' have become saiyamit (in control of one's mind-body and speech). If there is no saiyam (a state free of anger-pride-deceit-greed, attachment and abhorrence), then worldly interaction cannot be considered as [true] worldly interactions, can they? Even the slightest of asaiyam (lack of control over anger-pride-deceit-greed) means worldly interactions cannot be considered complete.