Hamie -
You do have to close them. Those bad boys are solid oak so pretty heavy. I thought about maybe a latch or plug in type holder at the top of the door, but it's best just to close them, this way they dont rub on a stop or something.
As I mentioned above if you like the pictures you will love it in person. It is so nice to open solid cabinet doors & drawers. Everything just seem to be so sturdy and strong, like your not going to hurt it by using it.
2003 28' Show Hauler Motorhome on a 1995 FL 120
www.showhauler.com