Not one to bet against the US economy, but having a low/no risk backstop such as SS is always prudent.
I also find it interesting how chasing that return that
@MTGomer is after has effected our country.
SS is treasury based, the rest of our 401Ks, mutual funds, various pensions have huge holdings in equities. I don't think it's hyperbolic to say that if AAPL or GOOG was to have a major crash it would have an extremely negative impact on millions of Americans.
Because of that relationship we allow them to kinda do whatever they want, and exercise the kinds of monopolies that Roosevelt was so famous for fighting.
... the Bull Moose Party...

At it's break up Standard Oil as an example was about ~1.7% of the US GDP, AAPL is ~10%
Standard Oil- break up and acquisition
Value of largest modern Successor, though some of these like 7I only purchased tiny parts of Standard. Point being, each of the 4 big tech companies is far bigger than Standard Oil was and are larger than a reconstituted Standard Oil would be today. Yet you never hear about AAPL being busted up. Doing so would likely have dramatically negative effects on folks retirements, but not doing so also has repercussions.
TLDR... there is no free lunch.