Will you buy the old, outdated used books?

Hi there, just want to ask your opinion about buying cheap old books which sometimes scattered around bazaar or book fair. Do you usually buy the cheap books offered by them? Usually I buy around 2-3 out of date books and novels which makes me thinking... are these really necessary to be bought actually?

I have bought some outdatedpolitical science books only because I could get them for less than $3. but the problem comes when old books are not really useful anymore if we read them now.

How about you? Do you usually buy them and read them until the end of the page or just put them in bookshelf (like I do) because their information is not factual anymore?

Jam it back in, in the dark.

The 80s fictions dont seem to suit my style. I bought some novels which are the top 10 according to new york times (at that time) and I found they are mostly boring. Fantasy novels are still good though.

There's nowhere I can't reach.

but do you always read all of them? used books, usually fiction are somewhat boring. True there are some useful books (usually history or language books) but most of political books are not really useful anymore. They end up sitting around my bookshelf.

This thing is sticky, and I don't like it. I don't appreciate it.