"Income inequality" doesn't scare me. I'd rather have a chance at greatness than guaranteed mediocrity.
Regardless of your personal risk preference, it should scare you based on its political implications alone. Massive income inequality is a hallmark of feudalism; I have strong doubts that America can maintain its integrity as a liberal democracy unless the current trend is somehow slowed and reversed.
And based on what little I know about you, you're no doubt correct that our current system is more beneficial for you than most of the alternatives on offer. Unrestrained capitalism naturally redounds the benefit of those who have capital, and your income is likely in the top 25% for the nation; you're basically already on the mountain, so to speak, and it won't be very difficult for you climb higher based on the competitive advantages you enjoy.
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But what about the vast majority of your countrymen who dwell in the valley beneath you, with no economic security and no real chance to build wealth? Is this a just distribution? Is this even sustainable?
Our current system of economic liberalism is a dangerous philosophy, particularly for those who profess to be Christian. There's a strong temptation to equate economic success with moral superiority; and by the same token, to view the poor and disadvantaged as morally deficient in some way. So if you're ready to admit that you prefer the current system simply because it works to your advantage, then I can't take too much exception to your stance-- ruthlessly self-interested, but honest at least. But I don't think you can suggest that the current distribution is just.