Okay. If SS isn't mandatory,
How is it possble to *not* pay any SS taxes? Besides never bringing in an income (not having a job), which is not a realistic option.
For a practical matters most everyone must have a number to survive; but there are still quite a few people who do not have a number, including many from ultra conservative religeous sects. On the other hand, I have had several friends who did not have numbers and they did quite well. Lets just say they always had a loct of cash in their pocket, and my close friend who died even had several credit cards obtained with no SS#. He had no problems buying anything, getting insurance etc.