You can’t help how you feel.
However, YABVU to assume having children and being a parent would have or will fulfil your adult children because you found it fulfilling.
I know many grandparents feel like you and look forward to being grandparents, but I can’t help but think it puts unnecessary pressure on adult children who actually may not want them but feel they have to because of their parents’ desire for grandchildren.
I have children, wanted them but I found it bizarre and insulting after I graduated uni being asked when I was going to settle down at 22 and then again at 24 with my parents and younger sister saying I should have a baby and telling me their plans for said baby with no thought to what I wanted. I would live with them, they would turn one of the rooms in their home into a nursery and they would help me take care of the baby. No mention of DH who I was in a relationship with in this scenario. I was working minimum wage jobs at the time after moving back in to help them care for my maternal grandparents while they were at work.
My father’s reasoning was that many of his friends had grandchildren and he wanted some too and both my parents pointing out they had me at 23, ignoring that I was 2 months early, needed care, my mother had almost died, and they were struggling financially for the first few years of my life where my mum moved with me hours away for a job for a year.
I love my children and a part of loving them is wanting them to be happy. If being a parent makes them happy, great, if it doesn’t, that is great too. It is their choice if I become a grandparent so to me it is not my concern or anything I have control of, therefore it doesn’t matter to me if I become a grandparent.
There are plenty of ways to interact with babies and children without becoming a parent.