Why would you upload pictures of yourself, your hobbies, likes and dislikes, your location, and make it available to everyone or at least everyone that you're "friends" with?
This is especially stupid if you're interacting with people on a website like this.
Call me a pussy if you want, but giving people the opportunity to find out so much about you is foolish, and all it would take is for some fucked up person to contact someone on your friends list that's not really much of a friend of yours, and offer them favours for information of your whereabouts.
I'd personally try to keep yourself as anonymous as possible, unless you're confident of your ability to outwit any potential enemy you have and know the safe way home is actually safe....
Putting ego's a side it doesn't matter if you're a 6ft 8 inch body builder or an MMA fighter. It only takes a stab wound to put you down forever.