oh but it does
i cant be in the same guild as my friends on different servers
i cant trade items like materials with friends on different servers
and i cant mythic raid with my friends (until a certain amount of time)
i joined a rppvp server because my friend was on it and i hated it because literal raid groups of horde would camp every corner imaginable (i still shudder at the memories of suramar and argus)
and no, transferring off wasnt the answer because of my points made prior. warmode is necessary and a blessing from the heavens above