Even as an English speaker sometimes I actually learn new words that become part of my vocabulary. You could say that these games are more educational than sex ed sometimes.
There are some paths that I don't bother with because the girl herself isn't that attractive to me, but otherwise no, I always play most of the paths. This isn't real life so I'm okay with having multiple love lifes.
Nah I just don't think so. Most retailers wouldn't allow it. Even if they sold it on their own website Idk if it would make back the development costs.