Why do so many questions get deleted while I'm answering?

Are you sure it's because they're deleted? I used to get that all the time, until I found out we're only given but so much time to answer. If we write out long answers, quite often they simply won't post.

Because I write long (sometimes) and because I type slow, when I know I'm taking a long time, when I'm done, I copy the answer, back click, press the "answer" button again, paste and submit. It happens less often now.

Probably because they were violations. I feel your pain, it has happened to me many of times. Are you sure their getting deleted because sometimes just reloading the page will correct this.

It happens often sometimes a glitch, try refreshing the page it might still be there.