Why do people keep asking if we will have number 2. Number 1 is 18 months now

It's the norm,a cycle. Jus like when u r dating, pple ask when r u getting married. Aft married, when r u gona have child. Aft 1st child, will ask when is 2nd one coming. Aft 2nd,will ask if u might wana have 3rd. Aft 3rd,pple will ask "how u manage 3 kids?!".. Cycle is endless! 🤣