I'm 61 and I'm definitely aware that by many metrics I am a worse programmer than I was 10 years ago. By some other metrics, I'm better, and I could still run

I'm 61 and I'm definitely aware that by many metrics I am a worse programmer than I was 10 years ago. By some other metrics, I'm better, and I could still run circles around most younger programmers in terms of architecture/system design. But it absolutely has an impact.