Writers out there - what about genders?

[Lhundulinwen]

Most of my stories are more of a 'coming of age' type of story. But the ages of my characters vary a lot. In my novel, the main characters, Adar and Acacia, are aprox. 18 years old. The leading male, Kado, is close to 20. Kado's father is 45-50. Then there is a unicorn who is 500-1,000 years old! I write her much like an elf, and Kado's father is modeled after many of the men of my father's generation. The main characters and Kado are all written after me and my friends. But since I have never been 45, or 1,000, I think it is harder to write those characters at times than Kado or the main girls. I have to think harder about how they'd react, or if they'd react at all.