I've only been flying for half my commitment thus far, but I have really enjoyed the actual flying. I'm still young enough that I've avoided most of the BS jobs/queep, but I know that won't last forever. Ask me again closer to my commitment and we'll see how much I'm still enjoying it. That said, my family has also made some big sacrifices with how much I've been gone.
To all you aspiring USAF pilots out there: realize that while this pilot retention crisis we are having is a great "recruiting tool" in some sense - what really is happening in the bigger picture (especially in the fighter community) is a shortage of pilots to fill staff (non-flying) jobs, because lots of guys who are getting out at their commitments have reached the pinnacle of their prime flying years in their military careers and don't want to spend the rest of it rotting away at a desk.
Spending 20 years and making it to retirement provides some truly great benefits. But, it says a lot about an organization/where it's going when I sit here and watch lots of dudes who I respect (some who could have "had it all" if they wanted, to include a few Weapons Officers) punch at the last minute and walk through the doors of Delta, Southwest, Alaska, etc.
If I had to do it all over again, I would, up to this point anyways. The money you'll be making as a doctor will likely be much more than you'd ever make as a military pilot, including the retirement benefits. But the experiences you'll have as a military aviator (in my opinion) are second to none. Good luck!