There’s another benefit: you remove a motivation to lie to yourself. If you think that a contingent fact will get you out of a hard choice, you might believe it. But you probably won’t if it doesn’t get you out of the hard choice anyway.
On the other hand, if you think that a contingent fact will get you out of a hard choice, perhaps you will be more likely to find legitimate contingent facts.
There’s another benefit: you remove a motivation to lie to yourself. If you think that a contingent fact will get you out of a hard choice, you might believe it. But you probably won’t if it doesn’t get you out of the hard choice anyway.
On the other hand, if you think that a contingent fact will get you out of a hard choice, perhaps you will be more likely to find legitimate contingent facts.