I honestly don't understand why you'd think staying out of work (and presumably allowing someone else to keep you) was a reasonable life choice
But it is a reasonable choice, particularly if you work together as a team. No one is 'keeping' anyone, we work together and just as hard. If you see it 'as living off someone else's back' then of course that sounds negative, but we both work hard in different ways and it works really well for us.
Dh works 16 hours a day minimum in a job that has a high turnover of burn out, to continue to do his kind of work he needs support at home. I could never hope to earn anything close to his salary so it makes sense of us to do it this way.
I have built a very successful and contented life around my own values, and together we have a loving and very secure home. I don't believe you have to earn a paid salary to be useful, fulfilled or contented - my work is very rewarding but it isn't paid, that way I can choose my own hours and fit it around my life.
For us it works really well, and we have had, and will continue to have a great and adventurous life. Everyone is different - and it pays to keep an open mind, as many opportunities arrive in life - and it is way too short to be miserable!