Since you've been doing your homework, you probably already know that your chance for any complication is just under 6% and your chance for a serious complication is about 2.5% with the RNY. On the flip side, you have about a 74% chance of curing your sleep apnea and a decent likelihood of reaching a BMI in the healthy range.
I am scheduled for surgery next month, so I can't tell you about my experience with it yet. What I can tell you is why I am choosing it after almost 7 years in my hospital's non-surgical weight loss program. I am 5'6 and 49 years old, with 2 teen/tween daughters. At the start of 2017, I was 249 pounds and on blood pressure meds, no other co-morbidities. My primary care doctor referred to me to the weight management center. They said aim for 1500 calories per day, 30 minutes of exercise 5 days per week, and check in with them every month. I was motivated and started tracking my food and exercise. I went in for nutrition, psych, and medical meetings as directed. The weight came off. I was thrilled! I got down to 202 in 6 months. I was so close to being under 200, and I was certain I could easily get to at least under a BMI of 30 to no longer be "obese." Piece of cake! Or rather, some suitably healthy cake alternative. Like apples, maybe?
And then I stalled for months. I never hit that magical 199 on the scale. I kept doing everything the same and my weight didn't budge. I ate a little less. I exercised a little more. I gained 5 lbs. I gained a few more. I became discouraged. Life happened. I would lose 10 lbs, gain 8, lose 5, gain 15... I tried various meds but couldn't afford them longterm. I lost health insurance for a year and couldn't afford to go to my regular check-ins, which I know were partially responsible for keeping me at least a little motivated even when the scale didn't cooperate. I got health insurance again, and went for my physical. My blood pressure had worsened and now I was prediabetic. My doctor urged me to go back to weight management. I had to wait 3 months for an appointment, and despite wanting to lose some weight in the interim (so the doctor there wouldn't be disappointed in me), I weighed in at 251, which tipped me over to 40 BMI. That was the most I ever weighed. When the doctor recommended I consider weight loss surgery, I knew that was the answer for me.
One thing I learned in all this is people can lose weight, even a lot of it. The likelihood of keeping it off longterm without meds or surgery is around 10%. Between a 2.5% risk of a serious complication or a 90% chance of being obese and on blood pressure meds the rest of my life, and risking diabetes, I prefer to take my chances with the surgery. It's not the losing weight that worries me, but the keeping it off that I don't think will happen without it.