Babies

So my son is 3 and I want to have another baby but my husband said he isn't mentally ready. But my issue here is I had my son at 18 and he was 19 what makes him think a 18 year is mentally ready for a child. And now that I know what it is like to take care of a baby and a toddler I can handle another baby. But he has been rejecting me since my son was 2 so now I am to the point where I don't even want to have anymore kids he's told me no so many times idc if he's mentally ready or not I'm not having anymore. He gets upset when I tell my family or our mutual friends that we aren't having anymore kids... Is that wrong??