There are 21 possible combinations of numbers that can come out on any given roll, you are correct in pointing out that 8 of them win on the passline (7&11), but 4 lose(2,3,12) and if any of the remaining 9 rolls comes out, the dark side would then be in control until the hand is finished.
Google "the best bet on a craps table" and you should find that one of the best bets in the whole casino is on the don't pass. The vig on the pass line is 1.41% and its 1.36% on the don't pass. Craps Vig from the word “vigorish,” is defined as the percentage edge the house takes for every dollar gambled.
The difference in the vig on the passline and don't pass is so small I would not take issue with anyone going with there gut instinct and putting a match play on either side, but if I walked up to a table and watched 5 guys make a point and then seven out.....I would bet on the don't. If I walked up to a table and everyone was high fiving and the mood was positive, I would probably bet on the pass line.
Another plus for the don't side is if a 6 or 8 comes out (which are bad don't side numbers) you can take your bet down. If a 4 or a 10 comes out and your betting on the passline (which is a bad passline bet) your stuck and have to keep your bets up.
Good luck and let us know how you make out.
weggie