It sounds like it could be a bad install.
Since it's not hard to do, why don't you try uninstalling InDesign (Uninstaller in Applications > Adobe InDesign CC 2014 folder). Then download again from CC Desktop app. (I did this recently for another issue and it's not difficult or time consuming.)
Windows or MacOS? If Windows, I'd blame it on user permissions. Sounds like ID would not save its settings when closing it.
Mac OS 10.10.1 Yosemite (Yuck!) on an iMac. Adobe CC 2014
I'm using CC on OS 10.10.1 too. I had this nuisance. On InDesign launch, the "What's New" box appeared I unchecked the "Don't Show Again" checkbox, clicked the "Done" button and then closed the box and immediately restarted Indesign. It doesn't show at launch now but is accessible via the "Help/What's New..." menu item.
All of us who hate the Welcome Screen are screwed because some pervert at Adobe has decided that we are going to be plagued by the Welcome Screen and we are going to have to deal with it whether we want to or not. Since the latest update, there is not even a place to click "do not show" on the freaking window.
I have a check box and I am running the latest version.
Scroll waaaaaay down to the end of the annoying "splash screen" nonsense and there's a check box to "opt out".
Logically it'd be at the top with "Stop annoying me" but it's like that marketing tactic where you have to walk the whole supermarket because what you're looking for, they moved, in the hope that you'll see something you didn't want and buy that too. AdobeMart.
I the computer mac or pc is on a AD network the Welcome screen never loads the graphics
It's just a black white large box.
If the graphics won't load you are unable to scroll down to the 'Do not show again" tick box.
There should be a option in the main preferences to show or not show the big ugly welcome screen.
On AD only way around it is to set up another network location and tether your phone for a open internet connection.
graphics load, you can then turn off the Welcome screen.
Guess theres no chance of sending my mobile data bill to Adobe!