What would a good Marxist say about this OP? Richard Wolff has spent decades studying and teaching Marxist economics, and he thinks those quibbling over interest rate hikes are missing the disease:
"Both sides of that debate celebrate
capitalism.
"They differ only on how best to have government serve the reproduction of capitalism: by leaving it alone, by intervening intensely or somewhere in between.
"These days they hassle over raising, lowering or leaving interest rates unchanged.
"The possibility that capitalism - rather than the Fed or interest rates - might be the problem troubles none of these folks.
"It does not occur to them.
"Nor is that surprising given the monotonous mantra of academic economics departments and the journalists and politicians trained by them.
"The orthodox economics professoriate treats capitalism as so wonderful and 'optimal' (among their favorite words) that questioning it brings only the momentary scowl of a teacher/priest dismayed by a student's/acolyte's failure to grasp essential, universal, absolute truth."
That absolute truth involves the diminishing marginal productivity of capital's effect on mature economies like the current US example. Capital accumulation no longer serves the interest of raising per/capita GDP. Rather, it limits growth and enhances a wide variety of predatory business practices.
http://www.truth-out.org/news/item/33016-why-debates-over-the-fed-s-interest-rate-miss-the-point