how can you give up all food ? If you did that for the entire season of lent, you'd die.
I'm not sure I'd want to give up the things I'm most dependent on. Whatever I give, it needs to be something I'm capable of giving up for the entire season of lent. If I were to try to go with something big that I'm dependent on, I'd probably fail and end up going back to it before lent ends, which would defeat the purpose.
I also don't this to be hazardous to my life. Giving up running water or electricity(in the middle of winter) might be hazardous.
C3PX, if I gave up the internet, it would mean I couldn't post on the forum. You wouldn't want that, right?