One of the best things about getting older is being absolutely certain about what you want and what you don't want.
I often think: Wow, I'm so glad I didn't marry that person; wow, I'm so glad I didn't live there; wow, I'm so glad I didn't do that job. I'm not judging those who are married or in the process of getting married—it's just that knowing who you are and what you want brings inner peace.