once you start it?
I don't if I've read only a few pages. But if I've read, say, 25 pages or more, I feel like I have to finish it because otherwise I've wasted too much time on something that has no closure. Or something.
The irony, of course, is that I'm only wasting more time finishing something I've realized I'm not actually enjoying.
I stopped being interested in my current read at least 50 pages ago, but now I'm slogging through it just because I feel like otherwise, it'll always be hanging there over my head as this unfinished project.
I suspect I am weird.
But I also suspect you are weirdoes.
I'm much the same way. I feel like, if I've started reading the thing, I may as well finish it, even if it's not really what I expected or hoped for. I'm trudging my way through the "Bartimaeus" trilogy now...it's not HORRID, but it isn't really what I would've preferred.
Sometimes, unfortunately, I'll slip on the last few pages. I read "The Hobbit" ages ago and actually stopped short of the last chapter! I didn't MEAN to...I just told myself I'd get back to it later, and never did. I do that more often than just not finishing on purpose, period.
But aside from that I'm usually a committed reader. It takes a REALLY awful book to make me stop when I'm a good deal of the way through.
Off the top of my head, I recall that I was reading this series of short books about supernatural and strange things in Michigan, and they were just so woefully poorly written...not only with spelling and grammar, but the writer just kept jumping to all these incredibly stupid conclusions ("Vikings visited Michigan! Well, there's no proof to say they did, but they COULD HAVE, so, I'm going to write a chapter saying they PROBABLY DID!")...I read like four of the books in the series, and forced myself to keep reading despite how cringe inducing they were, but finally I just got so fed up with all the ridiculous speculating that I stashed them away in my room and never finished. Kind of a shame since I liked the subject matter and they COULD have been good books if the writer hadn't been so...well, ridiculous. And if he'd used a proofreader.
Aside from that though I usually stick to it. Perhaps because I'm just forgiving/hopeful that way, perhaps because I've usually bought the books I read so it'd feel like a waste not to finish them.