I feel like technology has led to such an efficient form of capitalism over the past 20 years, that there's no room left for any possibility of social mobility. It's this system where there is just enough room for you to live and get by, but never get ahead. Prices for everything are so efficiently optimized at this point that there is no more "wiggle room" for a working person to build wealth. The basic necessities…
Where do you live, and what on earth are you spending your money on? Housing may be absurdly costly in many cities but $5.5k a month after tax (assuming you're American) is enough to do much better than "barely ok" almost anywhere. Are you significantly in debt or living above your means?
Bay area
~$5,000 net monthly
$2500 Rent/PGE
$1000 Car/Insurance/Gas/Parking/Phone/Internet
$500 Food/Clothing
$500 IRA
That leaves ~$500 monthly discretionary income, which I usually try to save as much as possible but inevitably gets eaten up by all the stupid little things in life that cost too much nowadays. I can't even imagine supporting a family on this income and it is far higher than most people will ever see.