And how many Cobol jobs do you see advertised? Close to zero.
I am an independent consultant, with 20+ years of experience. Let me tell you, noone who is looking to hire me gives a damn what I did 5 or 10 years ago. The technical problems (and tools used to solve them) 10 years ago were very different than today (even though you and I know that certain principles remain the same). I work pretty hard to remain current/relevant.
I often joke that software engineers should be paid like star athletes or actors - their shelf time is limited.