Advantages: no office or business worries, reasonably relaxed practice pace, opportunities to teach and do research at most hospitals affiliated with a residency program (and usually comes with at least a clinical appointment), decent vacation (30 days/year), government retirement and supplemental tax-deferred retirement savings plan, government (civilian) medical benefits, opportunity to relocate within the VA system and retain seniority and benefits, GS payscale with extra bonuses, all Federal holidays off with pay, resident coverage for call, can buy into VA retirement plan with accrued military service time, if you have any
Disadvantages: can't fire bad employees, have to submit to departmental process for capital equipment acquisitions, limited surgery time in some locations, GS payscale, may have unwelcome involvement by affiliated academic department head,