OP, you keep talking about what "most women" do or what "any spouse" would be uncomfortable with. IMO, you are never, ever going to find any answers to this situation from that angle.
1) You are not dating
"most women," nor will you be "any spouse" if you get married. You are dating
one, specific, individual woman who has apparently been quite up-front with you about how she socializes and what you can expect in terms of her seeing her friends, male and female. You are one, specific, individual man with your own opinions and comfort level about various scenarios. At this point, it doesn't matter what "most" people or "most" spouses do or are comfortable with. Whether your individual girlfriend likes daily mixed-gender skinnydipping expeditions or whether she refuses to ever be alone with another man or whether her social interactions are completely average in every respect--what matters is if you can be comfortable with her lifestyle, which she has openly revealed to you.
2) Generalizing about what "most women" do or what "any spouse" would be uncomfortable with is also unproductive because there is no such thing. I would be highly surprised if there was any issue whatsoever where you could find complete agreement among all women (or all men) or all spouses. I suspect there are pretty few where you could even get an overwhelming majority in complete agreement.
In your OP you said:
People shouldn’t be in situations or places where if all of a sudden strange thoughts get in someone’s head that they have an immediate opportunity to act. Why have to have a lot of strength to resist?? Don’t be in that scenario.
First, I don't need "a lot of strength to resist." I have a lot of male friends. I have been attracted to a few male friends (we were both single, incidentally). I have never found there to be much need for "strength" to keep things from going beyond friendship. In fact, it took a lot more courage to actually ask out a guy I was already friends with than to just be friends.
Second, why do people do anything at all that carries a risk? Why do I go horseback riding knowing that there is a real risk of injury or even death? Why do I do martial arts, after having seen friends break bones doing the same sport? Why do people get in their cars or even step out of their front doors knowing that people are frequently injured or killed doing just that? Why do you date when you know you could have your heart broken?
The answer is the same to all of them: because we personally have decided that they are worth the risk. I love horseback riding and martial arts and my enjoyment in life would be reduced if I avoided them because of the risk. I leave my house and ride in vehicles because my life would be miserable if I tried to reduce risk to that extent. I hang out with my friends, male and female, because they are people who enrich my life in myriad different ways. Ways that no one person, however amazing, will ever be able replace. Yes, my friendships and my hobbies both have the potential to hurt me, and I try to be safe, but at some point avoiding risk isn't worth the cost.
You presumably date because you find being in a romantic relationship
with someone else to be enjoyable and rewarding. And it should be; otherwise why do it? Can you be in a relationship
with this individual woman and have it be enjoyable and rewarding for both of you? Enough that it's worth the risks inherent in being in a relationship
? If yes, that's great. If no, then go your separate ways. But trying to fit yourselves into the mold of some hypothetical normal, average relationship
isn't likely to make either of you happy, so why try to?