I'm Too Old To Learn New Programming Languages?

ProgramadorPerdido writes: "I have been a developer for 25 years. I learned Basic, VB, C, FoxPro, Cobol, and Assembler, but the languages I used the most where Pascal and Delphi. I then concentrated on a now-non-mainstream language for 11 years, as it was used at work. One day I had the chance to move into Project Management and so I did for the last 2 years. Now at almost 40 years old I’m at a crossroad. On one side I realized developing is the thing I like best, while on the other side, the languages I’m most proficient with are not that hot on the market. So I came here looking for any advice on how to advance my career. Should I try to learn web development (html, xhtml, css, php, python, ruby)? Should I learn Java and/or C#? Or I’m too old to learn and work a new language? Should I go back to PM work even if I do not like it that much? Any similar experiences? Thanks."