It is very reasonable
Imagine taking ages 18 until 40 to figure out how to have a high enough income to be able to invest $1,000 a month
Then from age 40 until 62.5 you invest that $1,000 a month
Boom! Millionaire (assuming the rate of return Boomer did)
*But what about inflation
Simple, adjust the contribution amounts for inflation
It’s not hard to get to $1M invested with a typical 10% return and compounding.
Invest $1K/month and it will take 22.4 years
$2k/mo, 16.5 years
$3k/mo, 13.4 years
$4k/mo, 11.3 years
$5k/mo, 9.8 years.
It is very doable.