Seriously, we're going to go into life as cavemen to figure out the problem here? C'mon guys.
Instead of posting on a forum about it, ask her specifically what she doesn't like. She will tell you as long as you won't jump down her throat about it.
Maybe she likes warm showers.
Maybe she likes pretty hair that takes using a blow dryer.
Maybe she wanted to see her kids.
Maybe she wanted some alone time.
Maybe she doesn't trust you as skipper.
If you want her with you, figure it out. If she just doesn't like it, then she doesn't. She's not a bad person for it or a bad wife. Husbands and wives don't have to like everything
the other does. Obviously she's supportive of it enough that you got to make your trip.
No need to start discussing women as primates.
She might know she gets miserable on long trips and perhaps didn't want to spoil your fun. She tried and for some reason she couldn't tell you the truth. Either your feelings would get hurt or it'd turn into an argument. If/when you ask her why she didn't come with you, make sure you don't prove her right by being hurt or starting a fight.
Just remember, if she takes you to some girly store filled with gowns and other ******** you have little to no interest in, traps you there for days on end and keeps you miserable, are you gonna want to go back? No, you'll be waving from the front door of your house with a big smile saying, "Have fun, honey!"
And a big key most men are missing-
Women lose trust when scared.
Men are all, "I was scared as hell but he got us through the gale with 20 foot swells. Hell yeah I'd go back out to sea with him!"
However, if a woman is scared it doesn't matter if you got the boat through. You put her into a situation that scared her. Some don't get scared easily. Some do get scared easily. You may be out enjoying the trip because you're testing yourself while she is absolutely miserable and wondering why in the hell she got on a boat with you.