Need Your Opinion Ladies.....

Toi
My husband and I have been together forever(married 13 years, together 22). We have 3 kids ages 21, 16, 14, and a 22 month old grandson. For many years we had agreed that we were done having children. Recently my husband has started talking about having another child, and the talks are beginning to occur on a daily basis. I think this is due to the fact that our grandson lives very close to us and we see him all the time. I'm not opposed to having a baby, but with our kids being the ages that they are I'm not sure. What do you think?