Going through IVF I had a zillion scans before I even got pregnant so you kinda just relinquish 'control'. Our private OB scanned evey time we saw him, till we asked him to stop, but we still ended up having 7 during the pregnancy, not including the pre-transfer scans.

But, when we booking in to the hospital, the midwives were only interested in the date of my LMP - so big raspberries to the dating scan!

I can see the value in an early/dating scan in some instances, but most of the time it's probably unnecessary. I wouldn't have one if I conceived naturally.