【悲報】40代の平均貯金額は●万円…!年収や中央値は?投資をするべき理由 https://mensantiaginglife.com/2022/10/14/%e3%80%90%e6%82%b2%e5%a0%b1%e3%80%9140%e4%bb%a3%e3%81%ae%e5%b9%b3%e5%9d%87%e8%b2%af%e9%87%91%e9%a1%8d%e3%81%af%e2%97%8f%e4%b8%87%e5%86%86%ef%bc%81%e5%b9%b4%e5%8f%8e%e3%82%84%e4%b8%ad%e5%a4%ae/