Ok so if every time you hit your home screen and you are prompted to select your default home launcher then this should help fix your problem.
This is on KitKat but should work on previous versions. Firstly
Go to your | System Settings > General > Apps > All (Tabs on Top)
Find Your Home Launcher For this example I am on the LG G Flex Running KitKat 4.4.2 on Tmo
it should look like this
You will notice that the "Clear defaults" Is grayed out.
You will need to install Launcher Switcher by 개발자 (note this is to see what apps are in your systems Launcher Defaults)
Now compare your List of Apps to choose from your default home screen selector to the Launcher Switcher
You WIll See Some Apps in your Launch Switcher that is not in the app Home Selector.
Simply Remove The Apps that do not show in your home selector and the problem should be solved.
Hope this helps.