It may seem strange to send an annual bill to someone who is a life member, but I get one each year from the Scottish Rite. Note the blank spots for me to add my own donation to a few funds they have. That is the value of sending seemingly redundant dues notices.
Will I make a contribution? Perhaps. Maybe not. But I am a whole lot more likely to than if I got nothing but a new dues card each fall. I wonder how many opportunities my local lodge is missing by not doing this.