We have 3 kids and a dog, so we need 3rd row if we ever carpool or have someone else with us. We leave it down for storage unless someone needs to ride in it.
We also have a second home, so we're frequently packing luggage, and 2 rows just wouldn't provide enough storage and space for the dog. We used to have a 2 row plus luggage rack, but it's a lot easier to pack the back of the car than the luggage rack.
It sounds like you have time before you would need 3 rows. Most carpooling doesn't start until elementary school, unless it's just your kid and one other for preschool carpooling, which would work with 2 rows.
Just make sure you get 3 seats in the second row, that can fit two real car seats plus a booster in the middle. That way you could put an infant car seat on one side, another car seat for a 2 year old on the other side, and a booster for a 4+ year old in the middle, for example. Assuming life works out that way of course
