Thinking about Baby #5

Az

Soo I'm 23 and already have 4 beautiful kids 2 girls and 2 boys and for some reason I'm thinking for baby #5 and I'll be done. I know people think oh im too young and what not but I dont want to be 30 and be having my last baby i rather have them all young and be over with it. What ya think is this crazy of me to be thinking of another child!?