Of course there are plenty of beautiful cities.
One of the reasons to take a wallpaper can be because for you the standard wallpapers are boring. It can also be that you are just a big fan of something and that's why you take a wallpaper of that for example: Games or Animals etc. Or you just want a wallpaper for your phone or tablet so you recognized wich is yours. And some people dont even know why they take a wallpaper maybe just cause it looks nice or they like the designs Or it can also be to see the quality of your screen if you just take a HD wallpaper or a wallpaper for download Atleast wallpapers are not made for nothing cause everybody use and enjoy it!