Operations: The Life of a Surgeon's Husband

So, I married a surgeon...and that means more nights alone than I would have ever imagined. Some friends of my wife took pity on me and invited me over to their place for a play-date and a glass of wine last night. I feel they thought I was a total freak. The visit began with them sitting at their kitchen table having a conversation with me... while I stood at least 30 feet away trying to keep an eye on my 2 yr. old daughter who was playing with their 2yr old in the next room. I'm honestly not sure if I'm an over-protective parent or if they really don't see the possibility of injury....everywhere. Maybe they're simply detached? Are they relaxed because they know I’m there… and probably watching both children? I can’t understand how they can sit down and chat blissfully unaware (and apparently without concern) of what their 2yr old child is playing on, near or with. They probably just think I’m ridiculous. I'm sure they wouldn’t believe the, often gruesome, trauma stories my patient wife shares with me at the dinner table. We frequently discuss interesting congenital anomalies that are often quite lengthy due to my lacking a base knowledge of physiology...and therefore asking too many questions. However, we also talk about the many trauma cases in which children arrive in the ER as the result of something that happened when their parent or babysitter “…just left the room for a minute.” I used to see these cases as the "Nascar  crashes" for which some people endure the whole entire race just to witness....but now they have gone from exciting and crazy highlights to genuine fears and fuel for my anxiety.