How Many Babies are enough 12345?

I'm a 34 year old Mother.My kids are in age 15.16.&17 going on 30.Anyways I had a very rough motherhood& a terrible Love Life..So At this point things are kinda getting better for me after I turned my 30's  I have a Man that I think May want to be with me for long term and we are considering pregnancy at this point.So my Q. Is should I have a Baby ???