I feel like society on Roshar would develop a bit differently because of emotion spren. You'd have to be very careful talking/ interacting with people since you can't hide things like fear, anger, awe, anticipation, joy, passion and shame. Imagine going through high school having to deal with them...
I have to imagine it alters things like, say, the concept of masculinity. Obviously the Alethi have very strong ideas about masculinity, but attracting fearspren/feeling fear doesn't seem to be a negative within that like it would be in our culture. Men attract fearspren all the time, and it's totally fine.
It also seems like it might be taboo to mention someone else's emotion spren. People are constantly noticing internally that other people are attracting them, but they NEVER EVER comment on it (until the part in OB where they're investigating it in Kholinar). There must be a really strong boundary around commenting on other people's spren.
It's one thing I did want to ask Brandon about if he does another AMA--how emotion spren affect Rosharan culture.
This is some good theorizing here. I'd agree with what /u/The_Bravinator says.
The effects are all over the place, but they are just how life is on Roshar, so I rarely point them out. For example, the classic Alethi sort of idolizing being "straightforward" with people. No assassinations. (Well, supposedly.) You're used to being able to see people's emotions, so you take it for granted that only hyper untrustworthy people do things in ways that don't expose emotions. Emotions aren't bad, they simply are, and everyone has them. Views of masculinity are certainly changed.
Is it taboo to mention emotion spren that other people are attracting, or do people just not generally think to do so?
Depends on the situation, really. Not exactly the same, but note how in Earth societies the different responses to something like passing gas, depending on context, culture, etc.