>>21324272paintings and arguably furniture are more often taken with you when you move, so they might help with selling photos but most people want a blank canvas in a new house
"nice" wallpaper is subjective and would likely be seen as just another job to replace it
as with literally everything here, a lot of it comes down to class - you'd sooner buy a quirky cottage with fancy paper and grand fittings from a well-to-do boomer couple than you would a two-bed end-of-terrace in a run-down area with a different primary colour in every room
