I've never been in a position where I could financially justify being out of work for 6 months. Even if I theoretically have the savings to do it, growing up poor and intermittently homeless I just can't fathom the idea of spending that savings to live on when I could otherwise be working. When I've been laid off I treat getting my next job as my full time job, and I will spend 8-10 hours a day, seven days a week, either interviewing, networking, or researching companies I might like to work for.
Most recently I took about 6 weeks off between accepting my new job and actually starting it, and even that was extremely stressful on me. I spent most of it being certain that something bad was going to happen and I'd show up on my first day to find out that the job had evaporated.
Ultimately, I think people have different risk tolerances and dispositions for how they handle being out of work- but for everyone who's not independently wealthy it's going to be stressful. When your ability to survive is fully dependent on working, the knowledge of how capriciously it can be removed can be terrifying.