The gmail new look is not clear

I was traveling  in the past weeks, after coming back, the first thing I noticed after logging in  Gmail web (the Google Apps version) is the opportunity to switch to the new Gmail look before Google forces all of us to do that.

Some of the UI design of the new look seems to be more modern, however, I don’t like the new look, the main problem is the readability. The new look feels too “flat“, there is not clear UI elements (for example, borders) to make the different parts distinguish from each other, for example, when in the conversation view, clearer border lines should  be added among the labels list on the left, the email messages on the middle, and the contacts info on the right.

Maybe Google should give us the option continuing using the old look of Gmail, instead of forcing us to do something we don’t like?