Fair enough but the obvious question is "what mental resources?"1. If Mr. Biden's family really cared about him, they would insist that he leave the nomination contest.
2. If Mr. Biden really cared about (a) his own well-being and (b) the people of this country, he would immediately withdraw from the contest.
3. If Dems were really the humane people that they claim to be, they would not insist that Mr. Biden endanger his remaining mental and physical resources by engaging in a grueling campaign against President Trump.