I voted #2: "Some physical attraction required, but what really turns us on is their minds." ... but a better choice may have been something like: "Physical attraction lends a lot, but adding a good mental connection is more likely to take it to the top." (Yep. Creating comprehensive polls is tough.)
So... It can be an either-or-both kind of thing, and it can depend on my mood.
The range can be pure, raw, animal sex, to sweet & sensual. Sometimes the entire range is experienced in a single session, sometimes just one segment of the range.
The raw animal sex side can be just a physical attraction. Mother Nature's plan (procreation) is executed well here. On the more sensual side, I'd have to say that a good mental / intellectual connection is pretty much required.
So from an evolutionary viewpoint, what you end up with is a lot of good bodies, some good minds ("animal" usually wins), or some combination. I think humanity is pretty fickle in general. So the "mixed bag" is prevalent.
Personally, I believe diversity is essential.
This is probably the biggest attraction to the Swing Lifestyle for me. One person cannot bring it all, but one person can bring a lot. Find that one person, who also allows you some occasional diversions, and you've really got something. This condition is exceptionally rare, however. Partly because of personal differences, partly due to social structure (status quo).
Bottom line is: Animal sex is great, but adding the intellectual element brings the best experience, and is always worth the wait (IMHO).
;-)
BTW - Most of the time... The intellectual element tends to be more a part of foreplay... followed by great animal sex.
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