Worgren. Never made one that I got past level five and I dont plan on making another ever. I dont like the way they turned out aesthetically I was originally excited for them same for Goblins I also cant stand the phased starting areas of both.
I also avoid Tauren, Gnomes, Dwarves(my first character was a dwarf but I have not made another since.) and Pandaren.
Though they no longer exist I had about a dozen alts ranging from level 18 to 75 most of them made it to 30 at best during wotlk and tbc. They were usually always Draenei female, Human Male, Blood Elf Female, Troll Male, Orc Male, Undead Male or night elf female. My first character and my still current main toon are male but I usually make alts female no idea why. I tend to take new characters more seriously when they are male and have good names rather than silly names or female but I did level 2 female toons to 90 in mists with some haste ( 1 month for the fem human rogue and two weeks for the draenei female hunter.)
My main is a male undead rogue Ive had since 2007 lv 90 I also have a Fem draenei hunter I created in 2012 lv 90 and a human female rogue also created 2012 lv 90. Other than that I only posess a 33 undead male mage and a 75 fem night elf warrior.
Favorite Race overall Forsaken/Undead I love their starting area, and lore as well as appearance.
Least favorite race Pandaren no offense to anyone who plays one and I dont playing alongside one but I would never create one.