My DS lives in Australia, he and DIL are high earners and it doesn't look as if they will have children. They are not very good at keeping in touch, although we do manage to see them every other year. My DD, on the other hand, lives close to me, has 2 DSs and I know she will look after me and my DH in our later years. I want to give my DD a larger share as she does a lot for us and will do more in the future. So I am thinking on splitting our inheritance 3 ways, one third for DD, one third for DS and one third to split between surviving DGCs. I don't think a 50/50 share is fair in this instance.