in blender: cmd + w = quit blender without option to save... why?

When you click:
cmd + q = you are prompt to save file

Possible solutions:

cmd + q and cmd+w = same operation: prompt to save

or

offer option to disable shortcut

you should use search first ;-). Currently this “issue” is “solved” for Windows (afaik). There is an Option to on/off this behavior. For Linux and Mac it quits on cmd+w… There is a quit.blend file in Blenders temp folder which you can access: File -> Recover Auto Save.