Flynn broke his (glass) bottle when he was about 28 months. Ollie still has his (at 19 months).

I, on the other hand, had one til I was about 4. Turns out I used to get out of bed when my dad got up early for work and he got into the habit of giving me a bottle while he made his morning coffee. I don't think it ever occurred to him to wean me earlier LOL!