Just because you’re getting a divorce doesn’t mean lifestyle isn’t a consideration. You may have a wife and/or child in the future that may like to have you around more.
Also, remember that surgery isn’t just surgery. It’s also clinic and rounding and consults where you don’t operate. I’m not a surgeon so I can’t speak to what percentage of the average work week an attending spends in an OR, but it ain’t 100. As a Med student, it’s easy to view any specialty through rose colored glasses.
IR is a good gig. Just don’t make any rash decisions you could later regret. I would (personally) stay the course. If you do 1-2y of IR and hate it, you can always switch then and all you’ve lost is time. The Medicare funding thing is overblown. Yes, it’s an issue, but a lot of large institutions have unfunded spots. I know my site for residency and fellowship both do/did (both large, prestigious universities), they just shift it around to make sure all of their eligible spots are used on all of their eligible residents. Gen surg is roughly in the middle of the pack for match difficulty while IR is tough (which I’m sure is not news to you); given your credentials, you would likely be able to secure a very good surgical position after a year or two of IR if you change your mind, the opposite is not necessarily true. Plus, you will likely acquire some technical skills that may translate (think:vascular) and will certainly get a better anatomy foundation.