Teasers are for people who have no confidence and are scared betting. You will find out that more often teasing the points either way will not come into play. You are just shorting yourself on the payoff. To say it in plain simple words "SUCKERS BET".
This is simply not true.
I have plenty of confidence, and will put in 1-2 teasers every week. Its a small part of my overall play, but I still play them and they still cost money when I do. I'll do a totals teaser and a spread teaser.
Sitting on a Buff +10, Det PK, Phil +9.5 teaser that all covered, ending with a Baltimore +14. BTW, none of them covered the game spread.
I can now take the cost of the teaser and play NE -6 buying a half. Large middle opportunity, and will at worst break even.
I played Hou/Ind Under, Chi/Det Under, and Wash/Phil Under this am. Went 2-1 on reg lines, and teased them all and they all covered. I'm left with a Dal/NYG Under 47 to close the teaser. I can hedge the cost of the teaser with Dal/NYG OVER 39 as the line is now 46.
The teasers are paying 2/1, so if the hedge loses I get paid even money if the teaser wins or push the wager if the teaser loses.
Teasers are sucker bets for those that play them wrong. Buying thru Zero never a good idea. Road favorites another dangerous play. Making a blanket statement that they are for suckers is ridiculous.