You destroyed NOTHING, but a few more of your brain cells.
That's because at the time that Kennedy cut taxes, the economy was booming and could afford to make the cuts. Top tax rates were too high, and hadn't been cut since the Great Depression. Roosevelt, Truman and Eisenhauer built the transportation and infrastructure of the nation.
From a 2017 article on the Kennedy Tax Cuts:
"The economy also boomed after the tax cut, but the cause and effect is disputed. When the Congressional Budget Office
examined the question in 1978, it concluded that “most of this rise [in revenues] was due to economic growth that would have taken place even without the tax cut.” The tax cut reduced revenues by $12 billion on an annual basis, but CBO models indicated that only between $3 billion and $9 billion was recaptured through additional revenue."
The current corporate tax rate is 22% and Trump wants to cut it further. It was 52% when Kennedy was in office - more than double today's rate. The top personal rate was 91%, again more than double today's rate of 35%,
The revenue boom after Trump cut corporate taxes related to another section of the tax cut bill, which allowed corporations to pay a one-time 10% repatriation tax on corporate revenues held in offshore accounts. Corporations like Apple, Walmart, and other large multinationals with substantial foreign reserves, quickly repatriated these profits, and used them to aid in stock buy-backs.
taxpolicycenter.org
Corporations have been awash with cash since W was in office, and really didn't need the tax cuts. Workers needed higher wages, which Trump promised them would happen from the tax cuts, but the workers are still waiting.