How Long will babies outgrow baby cot, bouncer? At what age do you still carry ur Bubs in a carrier/ sling?

My son outgrew his baby cot at 9 months when he started trying to climb out, BUT he only used it for less than a month for short play time - he absolutely hates the idea of it and never slept in it before (we co-sleep since birth). He had bouncers and walkers etc too, but none of them lasted long because he outgrew them real quick! Bouncers took about a month, while sitting walkers was only a week because it wasn't recommended for development - the stand and push walkers were meant for play only, and the way he played was to flip it about and try to be an engineer with it. As for carriers and slings, he never liked it so we have never used them - it was primarily just my arms since birth, and then a stroller from about ... 6 months old or so? But he's also outgrowing that soon because he's getting tall and out of the weight limit soon :/