Preparation is key
We have all either heard horror stories or experienced the "joy" of removing wallpaper that was not installed correctly, or has been painted over. It's very sad that this puts many people off of using wallpaper in their homes. With the correct preparation, you can love your wallpaper now, and not curse yourself later.
Properly primed and sealed walls will release the paper when it's time to change your mind. Wash them thoroughly and put up more - or don't, whatever you are into at the time.