How many kids do you have????

How many kids do you have? How many do you think is too many? We have 4 kids and we had them close together 13 months after my 1st I gave birth to twins 4 months after my oldest turn 3 I gave birth to my youngest. We are considering have 1 more. After with I'm getting my tubes tied. Everytime I even joke about it with family and friends I get the I'm crazy look. We are not rich but we are ok. Are kids have everything the need and then some.