Two points about taxing social security income:
1) While you may not have been able to deduct your social security contributions, on the other hand you were not taxed on the equal contributions made by your employer on your behalf.
2) There's been talk over the years about means testing for receiving social security benefits. In other words, should someone like Jeff Bezos even receive social security? The problem with basing social security payments on a person's net worth is calculating net worth. If all you're doing is looking at portfolio balances, that's one thing. But what about the value of closely held corporations? Of real estate? Of art or physical precious metal? It's much easier to do a rough means test by instead taxing a portion of social security income based on total income. And that's why folks like Zeke and me will end up getting taxed on 85% of our social security benefits.
Personally, I prefer the option of taxing 100% of wages with no cap, but continuing the cap on social security payments. Yes, the wealthy will pay more, but in order to provide a base level of support for all seniors, I like this idea. Just my opinion.
MAGA - Morons Are Governing America