I also thought the lifestyle in academics would be better, but I was wrong. As a young academic surgeon 2 years into practice, I'm busier than I've ever been in the past.
I have production goals/RVU targets just like PP surgeons, but I'm expected to meet these goals in a less efficient environment with much less ancillary support. By itself, this might be fine, but this clinical production must be balanced with the many other hats the academic surgeon wears: researcher, educator, administrator, committee member, editor/reviewer, etc. I have so many meetings each week, it would blow your mind. I have things I do for my society's journal that take 4+ hours a month, then manuscript reviews I do for journals that take another 5-6 hours a month, plus giving lectures and grand rounds to students/residents/doctors in other specialties for several hours per month...along with the preparation of these talks....and of course there is no direct reimbursement for this, or any decrease in my % FTE from it....it's just done for the love of the game.
In academics, the building of a surgeon's reputation is not only important in the local hospital to secure referrals, but also on the national level to establish expertise, etc. We are always thinking about promotion and tenure.
The hardest part, though, is balancing the clinical work with educating residents. We are expected to be efficient and productive, and our outcomes are scrutinized, but we are also tasked with teaching residents, which takes a lot of time and energy, and certainly affects outcomes. They may save me from a few phone calls, but otherwise having residents around certainly makes my life much harder. Of course, I wouldn't have it any other way.
Ultimately, I think less is demanded of you in academics, so you can slide along below the radar and collect your paycheck, but if you want to be a good, productive academician, you will likely work much harder than your PP friends. Many times I've thought to myself that if all I needed to do was see patients, operate, and then go home, I would have a wonderful lifestyle, as clinical work is not usually the stuff that keeps me here in the evenings.