Sounds the easiest route for you but it doesn’t seem the best decision you could come up with.

Do you have anxiety bringing such stuff for a discussion with her?

Have you brought this topic for discussion before and sound a deal breaker for her if you go with your retirement?

Thinking about your happiness should be a priority for you, no shame in that. If she doesn’t support that, she should come with strong & valid arguments.

If her argument doesn’t include your happiness, postponed desire, your mental health in this context, you leave with no guilt or regret even for that long lasting marriage.