Gnomes and halflings are the best races. I love them.
I also love my gith mage, she is awesome.
Elves, humans and half elfs are kind of boring and bland. I make an exception for female half elf 1 , since she has a really interesting face, full of personality.
And I know a lot of role player, who play the opposite gender ( me included ), no problem at all. My air genasi bard Vayu is my favourite character at the moment and I made him as a minor character in our rpg at the beginning, but he just was awesome and great to play.