This response tells me you've never been in the science trenches. I've never heard of a postdoc making anywhere close to 60k, even at elite schools in high COL areas. The financial opportunity cost is staggering.
Straight wetlab postdocs are usually around the NIH levels (~40K). For computational postdocs (especially if you have a good biology background), 50-60K isn't out of the norm.
Also a Post Doc from a top lab directly correlates with how much $$ you can make in industry.