I think most just buy them because they like the look of them. That and want 5 seats. But it's useful to have 4wd, i go fishing a lot will be pretty good down some of the old pot holed muddy farm tracks I go down on a weekend. You can tow if you want, my dad's got a touring caravan I've been thinking about borrowing. Would be great for going on holiday or camping, biking etc get loads of gear in, all things I do on occasion. Should be fun in the snow if we ever get any.
Just a utility vehicle imo, work, family, play etc.
A van is probably a more practical window cleaning tool, especially if you carry loads of gear...I think trying to argue otherwise would be fooling yourself but I've not had mine out yet cleaning windows, going to start on Monday will see how I get on with it.