When did your first stop using a pram??

Paige

I am due baby no 2 in 17 weeks and my oldest will be 2. Just wondering if anyone has any experience or idea of this age gap when it comes to prams? My oldest is a really good walker and wants to walk everywhere but I tend to go on very long walks so he gets tired quite quickly. I am thinking at the moment of buying a double pram but not sure if it's worth the money if we wont use it for long