Six or eight years ago, we had many camping friends who said they would never get a camper with a slideout because of so many horror stories they had heard. But now, I think the slides are very reliable. And the risk-to-reward ratio has become very favorable. I wouldn't be without one. So much more living space.
Good advice here about being aware of what might be blocked when the slide is in. Our bathroom door won't open with the slide in, but opening the slide half way (about a foot) allows us to get in. Not ideal, but better than not having a slide at all.
I vote for the slide every time. And even with some of the smaller campers, there are opposing slides that allow you to have a kitchen island. That is really cool in a 25-foot camper.
2013 Surveyor SP220
2010 Silverado LT 5.3 V8
The world is a great book, of which those who never stir from home
read only a page. - St. Augustine