To me, its the best form of betting in the nfl. Its very difficult to find teams that consistently cover the spread in the nfl but you can easily find teams where the underdog teaser in their games is usually covered in certain situations (for example any saints/falcons game as the last 6 have been decided by 1 td or less)
I understand teaser payouts are bad, but if you can hit 60 plus percent with -120 teasers, isn't that much better than spread betting??