I re read this post and realized everything is rambling, does not make sense, or is kinda off topic so only read the bold if you want an understandable answer.
People say you can't judge a book by its cover, but too bad I do. If the cover looks good I read the blurb and if the blurb is not interesting I don't read the book, but if the cover looks bad I don't read the blurb. It is kinda a bad habit but...
Oops I went off topic. Let me answer your question now.
Say I do start a non-interesting book. Would I put it down? Good question. I always don't buy my books [because 1) I am 14 and spend money on other things that I want 2) I own a library card and when am I going to use it if not know.] so I go to the library and since I cant drive yet I cannot keep asking my parents to take me. So if I have a bad book from the library I would continue reading it unless I had a better book to read. If it was not from the library then I would not have bought it because I only buy books if it they are good. Well I hope that answered your question.