Wedding is an one time important affair. We print cards and sampradhaya pathrika for inviting people. It's importance doesn't stop there itself. Even after 12 years of marriage, our wedding invitation was required in my husband's office as a proof of our marriage.( we didn't register our marriage yet.) We might need our seemandham, kids ayush homam, upanayanam pathrikas for future reference as we will be elder to print invitations at that time.. We need these as reference. So please preserve or scan and store pathrikas for future use.