I was going to say something similar. Although for plug-and-play stability and for someone who just wants to show up to work, do some work, and go home without thinking more about it, an employed position is still "better" than private practice, IMO. You get paid for no-shows and/or other days when you don't have any work (e.g., sick days), there's not the possibility of lulls in referrals significantly impacting your income, you don't have to do all the things required in managing your business (e.g., find tax and business law folks, keep your books, find insurance coverage, etc.).
On the flip side, the income upside is almost always going to be higher when you're self-employed. There's also much more flexibility in just about all respects. Do or don't want to see certain types of cases? No problem. Want to change your report style? No problem. Suddenly want to offer a new group starting next week? No problem. Need to take the afternoon off to hang out at the beach? No problem. Want to hire someone to handle all the administrative stuff you hate doing? Have at it.