Yeah, it bothers people. It bothers me, at least, since it looks breathless and weak when I read it. Examples from some other writer:
Looks basically unpunctuated and impossible to read aloud. Try:Getting this over and done with quickly was in everyone's best interests I thought, I could live with the discomfort for the two weeks.
I'd have to conclude that commas are not periods, and no amount of apathy will make them periods...Getting this over and done with quickly was in everyone's best interests, I thought. I could live with the discomfort for the two weeks.
I, too, get all my grammar knowledge from reading, not from grammar teachers. The teachers just showed me what to call the errors. And yeah, I see them and they pop me right out of the story.