In speaking, it's not like you're going to remember every word someone's said, and you're mostly just concentrating on the next point anyway. Verbal tics like "You know" and "Uhhh" can barely register, when someone uses "like" a lot it can identify them as an annoying person, but not bring about thoughts of murder. You could very well just keep using "Also", notwithstanding the fact that you just used it in the same paragraph. In writing, on the other hand, it's just right in front of you, and it looks retarded. Think of how many songs sound perfectly good to listen to, but, then you read the lyrics on some site, and it's just awful. In music, repetition is nice, it emphasizes, contributes to rhythm - it would be absurd to not have repetition in, for instance, the chorus. In writing, it's just the same words copied and pasted over and over again... dumb.
I don't think I've ever transcribed someone I didn't want to strangle afterward. Even if they're perfectly normal and well spoken before, it comes out in writing like borderline retardation - and most are not even close to well spoken. There honestly don't even seem to be sentences in the speech. Plus, you have to clean up the transcript so that the client doesn't get embarrassed with their own sheer idiocy, else you get docked. By the end of it, you're making pennies an hour, and wondering what sort of third world native English speaking country these monsters have discovered that allows them to drive rates so low.