>I wouldn't want a third kid just because I don't want to deal with carseats anymore.
By the time you had your third, would the oldest still even be in a carseat?
But even then, three car seats is doable even in small cars: https://www.jefftk.com/p/three-car-seats
I meant that I do not want to deal with taking a kid in and out of car seats, or traveling with car seats, or taking them in and out of cars, for more years of my life.
Most likely still in a backless booster which means you need a bigger back seat.