My husband kept putting it off because he really didn't want anything to go to his son (long story) or his grandsons. He kept saying "I wish we didn't have anything". I kept saying "but we do, so we need to decide where it goes." We made wills, and mine had more specifics because I had money in IRAs that were set up well before we got married, plus there was a likelihood that I would also have an inheritance. He first bypassed his son in favor of the grandsons - then changed to exclude them and leave to his son. He may yet decide to change the will again.
I am in the process of re-doing my will since my father just passed, and there will be an inheritance. Not a huge amount, but enough that it has to be addressed.
I would advise anyone of any age to do a will and update as needed. Also, make sure your wishes are known w/r/t cremation, burial, whatever. IMHO, It takes a load off the survivors, and will give you some peace as well.