Phil McGraw's website indicates that affair couples have a success rate of less than 1%

Penny Tuppy has indicated on her site that affair couples have a sccess rate of less than 5%

Note : These two stats are very likley using a different measure of success.

For example, Tuppy may consider affair couples who are together 2 years or more a success, while McGraw may consider 5+ years to be a success...

Regardless, given the 50% success rate of the marriages in general, affair coulpes look terribly foolish to attempt such a hopeless enterprise...

THe numbers in my opinion do prove what you are suggesting... that it is literally a pointless escape...