I am pretty good at suspending belief. I read the Harry Potter books as well as lots of the Persy Jacksons. (Being a mom definitely changed my reading material.) Also the Fablehaven and Inkheart books.
In adult fiction, I tend to read more mysteries and historical fiction than fantasy. I definitely expect a mystery to be resolved without loose ends.
While on the topic of books – An Imperfect Lens – is an excellent novel set in the 1880s relating to cholera.
Finally, it definitely affects me as I read the news (I am sceptical of lots of the numbers).