You assume that the government cares about expenditures. Old people vote. So it would be in your best interest to keep the people that voted you into office alive.
Sources:
https://www.bpb.de/nachschlagen/zahlen-und-fakten/bundestags... (Zweitstimmenergebnis)
https://www.bpb.de/politik/grundfragen/parteien-in-deutschla...