Babies don't know that bottles are causing a mis-use of their tongues and jaws.
They only know that it is much "easier" -- they don't even have to open their mouths -- someone will stick a bottle in, whether they want one or not, and all they have to do is swallow and breathe. Babies may be ignorant, but they're not stupid!!! They already know that breastfeeding is WORK!!!!
Sincerely, Chanita