There's more applications on Linux than you think.
Opera (and other inferior browsers, such as Firefox or Chromium), Amarok, Skype, GIMP, MyPaint, LibreOffice, Blender, RawTherapee, NetBeans/Eclipse, VLC, Dropbox, Steam (with limited number of games), Minecraft (, etc) and 50% of all Windows applications (via Wine/PlayOnLinux. Performance may vary. Guild Wars 2, WoW, Sim City 3000* and certain more obscure apps are proven to work, MS Office 2007+, Sim City 4 Deluxe, on the other hand, don't tend to.
Also, you're doing it right by staying clear of Ubuntu and its shitty DE.
*Games via Wine/PlayOnLinux/Steam work only if you have proprietary drivers for graphic card installed.