Lindy, we should not feel obligated to manage every profile we create. If we have good information and sources about someone who isn't already represented here and we want to take the time to create a profile but we can't stick around to watch over it, we can go ahead and create the profile and leave it for someone else to add to later.
However, if the profile is private (usually because the person is still living), you can't leave it without a profile manager. When I create profiles for living people who are notable, I try to remember to add the Notables project as a Profile Manager, so the profile won't be orphaned. To add the project to the trusted list, add the email address firstname.lastname@example.org