What's wrong with the rich being rich and the poor being poor?
Nothing, as long as the rich aren't
too rich, and the poor aren't
too poor.
From a purely practical perspective: A mass of poverty, in the wealthiest nation on earth, doesn't make sense, and will lead to deep political unrest. We also rely heavily on local funding for education, which all but guarantees that the poor will stay poor -- because the students who need the most services wind up being the students who receive the least and weakest educational resources.
To make matters worse, we've increasingly shredded the safety nets. Welfare is basically gone, AFDC pays a pittance, subsidized housing covers a fraction of those who qualify.
Intense concentrations of wealth in the hands of a few is also problematic, as it concentrates too much power into the hands of a few. This effectively disenfranchises most citizens, since it is only the wealthy who can buy access (or run for office).
I used to be poor. My parents were fairly poor. I'm middle class now, striving to make myself better.
That's nice, but anecdotes don't really change anything. Statistically speaking, we are nowhere near optimal levels of economic mobility.
Most of the poor can make their lives better if they choose to, just like I did.
No, they can't. It is
much harder to get ahead when you are one paycheck away from homelessness; and simply because you made the jump to an upper quintile does not mean everyone can.
For example, jumping from lower incomes to middle incomes was relatively easier in the 1950s and 1960s, as there was lots of well-paying union-protected low-education jobs, mostly in manufacturing. For a variety of factors, those jobs are mostly gone; thus, someone with only a high school education is far less likely today to earn a middle-class living. Meanwhile, the cost of higher education is outstripping inflation, and loans (many of which are private) can place a huge burden on students.
Why can't a billionaire give me a measly $100,000?
No one is asking billionaires to give cash grants to individuals.
What we are doing is using the tax system, and other government actions, to blunt the sharp edges of income inequality.
I have no problem in taking care of the sick and disabled.
Good news! Huge chunks of federal spending pay for Social Security, Medicare and Medicaid. Oh, and military. You do want a military, right?
How about FBI? DEA? Federal courts? Debt servicing? Education? Veterans? Highways and transportation?
The reality is that very little of the federal budget goes to anything we'd call "welfare" today. AFDC, TANF and housing are very likely 5% of the budget or less. Nearly 80% of the federal budget goes to Social Security, Medicare, Medicaid, military, and interest on debt.