I live in a 100 year old building with lots of plumbing issues. I don't trust my tap water. I limit my consumption of it.
So, yes, I buy such drinks -- and consume them -- daily.
This is possibly a class issue. Lots of people in the world lack reliable access to clean water. There are entire charities devoted to trying to remedy that fact.
I didn't come here to ask a bunch of random internet strangers to tell me what a stupid fuck up they believe me to be for absolutely no reason and how easily they think they can solve my problems with a snap of their fingers.
I intended to make two points:
1. Given what a shit world we live in, harder plastic bottles are the lesser evil in many cases. They are much less poisonous than styrofoam containers, especially when hot consumables are put in styrofoam containers.
2. Gas fumes are a related threat, so the less exposure you have to gas fumes, the better.
But do people buy those drinks daily? I drink mostly just tap water - because it is convenient - as it is almost everywhere.