I hear you, but my philosophy is to spend less time editing than reading the book.
Most books I don't edit much, if any. But I've been unfortunate enough to buy a string of Topaz books lately, and those definitely need editing. For one, I must convert them to mobi from Topaz. Once that is done you can count on a multitude of OCR errors. Search and replace becomes my good friend in those cases! I understand using Topaz for ebooks that were last printed 25 years ago, but I'm getting some new releases in Topaz.