You can disable window restoration system wide (System Preferences -> General -> "Close windows when quitting an app"). So you don't have to use the shortcut a

You can disable window restoration system wide (System Preferences -> General -> "Close windows when quitting an app"). So you don't have to use the shortcut at all in that case. Personally I prefer getting used to using it on a case-by-case basis. For example, when I leave work I tend to quit most apps on my laptop with Cmd+Option+Q, so that when I get home they don't re-open with work and I can start working on personal projects.