One baby or two?!?!

So my daughter is almost 8mo old. I still miss being pregnant. I really want another baby but I'm scared. My daughter is perfect for me she doesnt fuss that much, easy to deal with at night, ect... I would like them to be closer in age. But I want to give my daughter everything because I grew up with nothing. How much of a change was life when you went from one kid to two kids?