I have never owned one and do not particularly want to.
They use a lot of petroil, are so big, and for me, totally unnecessary. I think an ordinary mid size sedan has just as much room for children, luggage etc, so I really cannot see why so many people buy them.
They often are bad drivers also and think they own the road.....no, unless you go into the bush I cannot understand why these are so popular and there are so many around.
Oh! Finy, your 2nd para re space is incorrect.
We carried the two kids, large portable fridge, huge willow picnic basket with camping cooking gear, two stock saddles with their accompanying tack, two kit bags with our clothes, & fishing gear, in the back of our SWB.
Try fitting ALL of that in the back, & boot of a mid sized sedan car!