When I work on profiles connected to me, I tend to add parents, spouse, and children, and then the parents, spouses, and children of them, and then I find myself down the rabbit hole, so to speak.
Eventually, I have to leave many of them with parents, spouses, and children that still have to be added for to be done at some later date. (I add specific categories to them to help me keep track of them.)
Occasionally, I find a connection to someone already on the WikiTree one world tree and give a sigh of relief. Someone else can manage that part. But then half the time the profile is orphaned and needs more work and I adopt it and other half of the time the profile manager is inactive and the profile still needs more work. Sigh.
Occasionally, someone contacts me about connection to a cousin on the tree, and I happily add them to the trusted list and make them profile manager of as many of my cousins or my cousin's spouse's lines as they want.
Occasionally, I have to orphan lines that are not directly blood related to me and I have no more work to do.
One day, I hope most of the profiles I enter will be in someone else's trusted lists and profile manager lists.
I do my work expecting that someone else will take over the work eventually.