One very important aspect about submitting self-attested documents:
In the ordinary course, we keep issuing and submitting our KYC documents (identity and residential proof such as PAN card, electricity bill etc.) to various people. For housing, car or other loans, bank accounts, or even for buying a new Sim card, we submit these documents.
At almost all these places, they ask for self-certification of these documents. We immediately sign these documents and hand them over. Just imagine your self-certified copies are freely available in the hands of such persons & these documents can be used for any purpose It is really serious as it has been seen that in most terrorist activities, KYC documents are sourced from SIM card sellers.