People love to display their artwork all over their homes especially if they have some prized ones that do have a lot of value and investment in them. Though generally safe, proper protection form greasy hands and even a glass enclosure to exclude humidity to prevent it from degrading in time.
You may also want to get your recently purchased artwork checked for any needed protection such as clear lacquer sprays or some specialty enclosures that can be ordered to specifically prevent, say a rare painting from drying out too much or getting too wet. Art, especially older works are quite fragile so frequent inspection and cleaning might be necessary to maintain it’s beauty.