That's great! But it's not enough to contribute positive things; you also need to not contribute negative things. It is like society: good deeds don't mean you can break laws.

Another factor too: people tend to overestimate the value of their positive contributions and underestimate the damage of their negative ones. Probably by an order of magnitude in both directions, in which case many of us are adding a hundred times less value than we imagine, if we're adding value at all.