I think the best way of thinking of deferring SS is that you are "investing" what you chose not to receive in deferred annuity that starts payments at age 70.... if you are entitled to $750/month at 62 and defer to 70, economically, you have made 96 monthly premium payments of $750 or $72,000 in total.
Then from 70 onwards, rather than get $750/month you'll get $1,320/month.... or an extra $570/month or $6,840/year for life.
With 0% interest, the payout rate is 9.5% ($6,840/$72,000) and the payout is inflation adjusted.... the equivalent of buying and inflation adjusted annuity of $570/month for life for $72,000... a screaming deal in the annuity world. For comparison, $72,000 would only buy a SPIA with a monthly benefit of $464 and the $464 is not COLAed.
One could argue that the 96 payments of $750/month would have earned interest... ok, let's say that it grew to $80,000... that is still an 8.55% payout rate and much better than the 7.74% payout rate for a fixed annuity and the COLA is the cherry on top!