For abvious ontic reasons nobody wanted to begin to exist and no one wanted not to begin to exist. This is a constellation which we may dope the nativistic stalemate. Nobody is “forced” into existence – as some antinatalists have it – and nobody is deprived of existence as some pronatalists put forth. However, every person exists at the behest of other persons. People do not initiate their own existence. Our sheer existence does not fall into our own responsibility.
Even if some parents consider their offspring as a misfortune the state will usually not do so. As evinces from the upheaval that is made once somebody wants to commit suicide, most states care about their people’s pure existence – even though they may not care at all about their people’s suchness and well-being and will have the elderly fade away in gerontocamps under conditions which beggar description. Resting upon their constituting individuals and being therefore generally opposed to people who favour withdrawal from existence (or antinatalism) states want their populace to exist at all cost. It seems, therefore, reasonable that the state as the comprehensive natalist should grant an unconditional basic income to everyone.
For more cf my article EXISTENZGELD – FÜR EIN NATIVISTISCHES BEDINGUNGSLOSES GRUNDEINKOMMEN