As a writer, if I had a story idea that I really liked, I would never just give it away. You may not have the time right now to write it but in the future you might.
I have the same problem :\ Start writing those ideas down ASAP, just don't post them on here or anything. Write them during the weekends. If you want to post them, wait until they're finished so you won't have to worry about updating them +573987695667 other stories.