When you're single, your parents and married siblings, often with children, are demanding of your time. They expect you to attend their functions or aid them with little or no notice, and with little or no appreciation. Since you don't have a spouse or children, they incorrectly assume that you're not as busy as them. Work, social events, dating, and friendships suffer because of it. This prevents you from getting even because it impedes your search for a mate with whom you can procreate. It's difficult to ever get retribution, especially as a youngest child. This is common with ethnicities with strong family bonds who use guilt to maintain closeness, such as, italians, mexicans, armenians, indians, persians, and jews.
Heather: Hey Jenny, are you going to the match.com event tonight?
Jenny: I can't, family sabotage, I have to help my niece with her homework tonight.
James: Dude, are you going to Stephanie's birthday party tonight?
Henry: Ugh, no, family sabotage, I have to babysit my nephew.