If vasectomy is complex I wonder how I pulled into the parking lot and pulled out of the parking lot within 30 min of my vasectomy appointment (my wife drove me and waited in the car). It took the nurse longer to shave my balls than for the doctor to do the operation.
Vasectomy:
1) create incision into the scrotum.
2) fish out one of the vas deferens tubes, clip it, sever it, cauterize it.
3) fish out the other vas deferens tube, clip it, sever it, cauterize it.
4) put the tubes back in the sack.
5) stitch up the sack.
It took all of like 7 min to do.
I absolutely guarantee a typical IUD placement appointment takes longer than my vasectomy took. Now my doctor was like the president of the local urological organization and had been doing them for like 30 years, so maybe my experience was better than average. I was also the first appointment of the day (highly recommended for this type of operation).
Placing an IUD is obviously pretty simple as well, but the hormonal side effects are anything but and most women will have meaningful side effects. Vasectomies have very low rates of complication and most complications are because the guy didn't follow post operation instructions. As I've said before, if you had knocked me out at my house, taken me to the operation, then returned me to my house and just said chill in bed for the next 3-5 days after I woke up at home in bed I wouldn't have had any idea what happened to me. I wouldn't have had any reason to believe I had had a vasectomy.
Dudes are generally just wimps and are scarred of having their balls messed with.