Yea...God didn't think of all these terrible scenarios when He gave us the inerrant guidelines of scripture...and at least He certainly knew we would encounter things He did not provide a GODLY solution for so He gave us guidelines He knew we could not keep and then said, My will is optional...you figure it out..
I bet He didn't know what terrible enemies we would encounter when He told us to do the impossible and love our enemies and do good to them...I know He is looking down now and shaking His head saying, wow...I didn't realize they were going to encounter such terrible things when I told them that..even I can't help them with THAT..
There are no scenarios anyone can conjure up that God has not made provision for so when Jesus stated the only grounds was infidelity and even then it's the hardness of your heart He KNEW GOD is more than able to provide what we need in any of these scenarios without violating His will...
The simple fact is...we don't want to