[ProDigit]

Most books I read are good. Informative. Only a small percentage is recreation.
I like SF books, but don't frequently read one anymore.
In this demanding times where time seems to be shortened, I spend more time reading informative books like science or history books, rather than entertainment books.

In my mind, entertainment is good for people who have the time to be entertained.
I have plenty of time, but not enough to be 'wasted' on entertainment books...

I also find that a lot of unmotivated people love to read entertainment books,while motivated people, if they are reading, are often reading stuff that will help them in their course of life.
I know what I just did was make a very strong statement, but hopefully you'll see there's some truth in it.

Obviously many entertainment books seem to benefit some, otherwise they won't read them; while for others it may be a total waste of time.
But people without the desire to achieve something in life, will have more time left to read than those who's goal is to do something, achieve something, to achieve a life's goal or something...

In my teenage years I had nowhere to go. I just wondered around, and read lots of Science Fiction books.
But now I find that time is too important to be reading stuff that does not help me move forward in my life.
I set a goal to be a musician, so I'll do what I can to become one (next to all the daily and demanding tasks that we have).

Another thing I wanted to add, is that there are so many books, and not all of them are beneficial or good. It would take ages to figure out which one are beneficial and which one aren't.
You can stick with a couple of favorite authors, but in essence you don't want to become a copy of the author; you will want to learn other things, and grow in your own way.
I find problem with books,just like with movies that often from the short introduction on the back, and the book cover, you can not say if a book is going to be good or not...
You'll have to read it, and only then say if the money was worth it, and the book was a win; or it was a total waste.

And unfortunately for some reason these days there are more 'wastes' then 'wins'.

Another thing you can do is read books that have a high popular demand or rating.
Those books are generally good for beginners, but if you'll really get into reading (a hardcore book reader or fan), you will want to read something outside of the standard book stories.