Then you'll probably end up alone a lot. From medicines, to exercise, vaccines, going to GP, having more serious procedures, going to bed on time, pregnancy... partners will give inputs on most of it. Strange would be if they didn't worry about each other

You will always have the last say about yourself, but you will also be mad when your partner ignores something you think you're righter

Especially if you end up having children together and cannot handle disagreements on what best for their health and life in general