Honestly, I don't care whether I am driven over by a Porsche Cayenne or a Willys MB.

And while I have not worked in the banking sector myself, lots of my friends did - and it was not cobol. They are catching up and they all know that their mainframe sw is dated and act upon it.

I don't think the "quality" of the tech is of any relevance here.

EDIT: Well, I actually know some guys who bit the bullet and learned cobol when they were just turning 20. By the time they turned 30, they did not have to work anymore.