Everybody does not get out exactly what they put in to the state - otherwise taxation would be pointless. Some get more, some get less. From each according to their means, to each according to their needs - if you need to use the state less than other people, maybe it means life and luck have been kinder to you than to (some) others, not that you are owed a refund. Childless people will benefit from the taxes of the children of others, when it comes to their pension and social care when they are older.