If you don't want truthful answers, then don't ask. And if you want people to keep helping you here, then don't insult the site.
Your consumer drive is built and sold for about $25 and designed to read and write an occasional disc. It's not a production or laboratory piece of equipment designed to run for hours and hours to pull almost unreadable data off a bad disc.
So if you value your drive more than the content of your DVD, then don't use it that way.
In the few cases where I have tried to rescue a commercial DVD, I have used some of my less important drives in case they die during the rescue operation.