this might be the saddest and dumbest thing i've ever seen.
there's immigration. when birthrates are too low they'll just open up immigration.
even if there wasn't a simple and straightforward response with historical precedent that hamstrings the sentiment expressed in the op, it's insanely depressing that anyone would ever think to pen the words "i'll kill myself to hurt you!" as anything other than the tragic, diseased ravings of a person abused and neglected by everyone around them.