what races do you hate - you, the person in front of the computer or you as in "your ingame character"?
(answer for both: none. at most i/my ingame char like/s or dislike/s people, independent from gender, race, sixual preference, etc. etc. etc.)
what i CAN answer is my preference of race when i create a character, and this is dunmer, male (and maybe imperial, female, for a secondary character in the distant future
)
i'd certainly never play a nord, orc, breton or bosmer, as i simply don't imagine the nerevarine to be of that race (but i very much like npcs of that races: sharn, eydis, the skaal, that morag tong orc who always greets so nicely when i'm on my way to eno hlaalu, the breton guy locking himself up scared of the scamp, that nice teleport lady in the balmora mages guild and even fargoth (!), whom i silently repayed what i had taken from his hiding place by breaking into his house and putting the stuff on his pillow
)