I hope you are able to gain some clarity from writing. There are all manner of ways that our families can see us as lacking and express disappointment. I agree - sometimes it's a struggle to keep going with what you feel is right for you in the face of the norm.
I don't do it much but sometimes I find myself feeling anxious because of my choices to not get married and to not have children.
It's easier as I get older and I remind myself that I am living the life that seems most right for me. It isn't perfect - nobody's life is perfect - but I think it's the best life for me. Reminding myself of that helps whenever I have wobbles.