Daryl Dixon's brother Merle was left for dead. Daryl is extremely independent, and can survive on his own during the apocalypse; but he does like the feeling of being with others, and slowly creates relationships with members of the group.

The Walking Dead Quotes

Daryl: You've got some balls for a Chinaman.
Glenn: I'm Korean.
Daryl: Whatever.

You walk outside, you risk your life. You take a drink of water, you risk your life. Nowadays you breath and you risk your life. You don’t have a choice. The only thing you can choose is what you’re risking it for.

Hershel