In my experience, they all come around eventually!
I managed to involve my whole family when we started out with 5 chicks - as we each got a chick to name and call our own. This means everyone has to help look after them. My DH was a bit reluctant at first but now he orders dried mealworms online and feeds them as treats to the chickens (who are now 3 years old) and always makes sure that "his" chicken gets the lion's share - it is so funny to watch him favouring her and shooing the others away. She is also the only one allowed to sit on his lap!
For any reluctant other half - I suggest giving one of the flock to them, especially when a baby, so they are responsible from day one!
Now "we" have ducks too - see how well this works
(REALLY OF COURSE, THEY ARE ALL MINE,
)
Also, when they taste the difference between home-grown eggs and shop-bought eggs, they will never think your "hobby" is a waste of time ever again!
Never mind lingerie, say it with an omelette!