Why is this software so poor?

Ok, you forced me to use your Digital Editions to read my books.

But why didn't you try to make this software useful?

- scrolling is slow!

- even switching between pages is slow!

- zooming is painful!

- no fullscreen! There is no way to hide toolbars at the top and bottom of the screen.

With such a bad app I just can't read a book on my macbook pro. Seriously, it is even easier to read my book in google play on my phone!