"2-1 is 2-1"
a 2-1 shot
is not a favorite in a pool with high takeout.
Maybe your fair odds are 7-5 for a given horse and he's 2-1?
And you hate the 3-5 shot,
and you dislike the even-money second choice?
OK fine.
Make the play.
You just made a small profit, on a HUGE opinion, after showing the patience of Job.
That's a crazy thing to defend.
At least you love the game, and would be fine playing the ponies in those scenarios instead of using your time on something more fruitful.