It's about finding value, and if you ignore half time or quarter lines, you most likely are missing out on some hidden gems. You shouldn't call anybody a degenerate, judging from your previous replies, you've got some issues man. Get some help, and keep your "sharp" advice to yourself.
For the original poster, a good rule of thumb is to not lay anything higher than
-200 and be cautious even laying -150-200. keep your bets within -150 and you'll end up all right if you choose your spots correctly. Also, if you can recognize some traps, like UCONN vs. NC State in the march madness tournament, then hit that ml dog.