You only have one?

Ok, ok this may come off a bit mean but I'm sick of everyone asking me when I'm going to have another baby. Do I want another baby? Yes! I very much so want to have more children. Am I pregnant? No, not yet.
Everyone thinks they know the "right" time for someone to have another baby. I'm even talking about complete strangers. Two people, yes TWO asked me when I was having another one in the line at Lowes to get paint! An old man goes "you shouldn't wait, do it now, believe me". Well, thanks old man but I really don't appreciate your comments on the spacing of my children. Then a mother goes "OH, my kids are 24 months apart and it has worked out great. You should really get pregnant soon so they will be close, if not they won't be close when they grow up!". Seriously? My sisters are 7 and 14 years older than me and I think we get along just fine. Would I have liked a play mate closer to my age? Yes, I would have. However, that doesn't mean we would be more or less close compared to my sisters.
Plus, what if I wanted only 1 child? OR, what if I couldn't have anymore children? You never know someones problem and for a complete stranger to give unwanted advice is very odd.
Sorry for the vent, but I'm sick of people asking me about this. Well, not asking me. I'm sick of people telling me what to do regarding this.
Vent over.