I would have been happy to have waited till I was in my mid- to late-30s before I got married, but you don't choose when these things happen, and when they do, there's no doubt in your mind. ↗
If you want to be certain, you should never get married. You should never change jobs. In fact, you might as well just stay home. Because I don't know anybody who is certain. That need to be certain is just procrastination. ↗
A lawyer I once knew told me of a strange case, a suffragette who had never married. After her death, he opened her trunk and discovered 50 wedding gowns. ↗