It entirely depends where you draw your fulfilment from.
I'm a qualified professional, letters after my name etc. Hated it. Done the big important job, and whilst I felt a small amount of satisfaction when I'd achieve something deemed impressive within my field, it was short lived. I hated work. Good money. That's the only pro for me.
I'm now SAHM to 3DC and I love it. We have toddler twins, so the well maintained house has essentially gone to shit, but it won't be like that forever. I draw up and print out meal plans so everyone knows what's for dinner for the next ten days. I have the time to sell all the DC old toys and clothes on eBay and make actually a decent amount.
I repair things instead of throwing away and buying replacements. I dress the dining room for Easter, or Mother's Day, and have family over all the time for meals I've enjoyed sourcing ingredients for, then making. I batch cook maybe 4 lasagnas, or shepherds pies on a Monday, so we've always got great food in the freezer.
I get real fulfilment from keeping the house as nice as I can. Making delicious meals. Having the time to spend actual quality time with DM and DNan, who are both not getting any younger. Whilst we are a one salary home, and I definitely don't bring monetary value equivalent to what I could earn, I do save us on nursery fees, I make over £500 a month on selling things the kids have grown out of on eBay, and clothes I don't want anymore. I'm a great cook, and being afforded the time to batch cook, means we eat fantastically, for about £1 per portion, all because I have the time to go right from scratch and spend a whole day cooking. We also no longer have a cleaner. I'm learning to properly prune and shape the hedges too.
My brain has definitely turned to mush. Constant kids TV, most of my adult interaction and conversation is from being in a shop of some sort, hardly taxing. I get frustrated when I can't think of the right word to describe something, when my vocabulary used to be enormous. But this is only my intellect that's taken a hit. I'm still kind, funny, interesting, and lots of good qualities. I'd take loss of intellect over full time work any day of the week. But that's just me, I can't fathom how people get any fulfilment from their job, just as they can't fathom how I get any fulfilment from being a housewife.