When I was a kid, I was not cynical at all.
As a teen, I realized the world was full of people who would take advantage of me given the chance.
As an adult, I had to make a choice:
A. Be cynical by default so nobody could take advantage of my open nature.
B. Remain optimistic, accepting that some people would take advantage of my openness.
After some soul searching, I chose B.
I never regretted being open by default. I look at the world with optimistic eyes, and it’s been a better life.