Apart from the fact that your physical ability starts to decline, I also think someone in their fifties being childlike becomes a little sad. You've got to be careful. ↗
I've found that if I say what I'm really thinking and feeling, people are more likely to say what they really think and feel. The conversation becomes a real conversation. ↗
I always work out of uncertainty but when a painting's finished it becomes a fixed idea, apparently a final statement. In time though, uncertainty returns... your thought process goes on. ↗