Wondering when it became acceptable to provide your private phone books, chat logs, call logs, SMS, photos, etc. to companies without asking or even notifying the people in your address book, those you have been chatting with or you were taking pictures of.

The companies collecting this data from you are selling it to anybody who is willing to pay the price. And the price is high!

WhatsApp has 450 Million users and was bought out yesterday by Facebook for 16 Billion USD. This deal was not about infrastructure, design, patents, inventions or knowhow. Facebook already had all of this.
It was just about the 450 Million users - you - more precisely: your data.

That means your data (the data of every single WhatsApp user) is worth 36 USD per user to Facebook.

Facebook didn't buy anything else but you.
You're not the customer - you are the product.