The most fundamental reason why many republicans don't want to impeach Trump is because they believe it is fundamentally not wrong to do anything without regard to morality, legality, or public welfare to benefit oneself.
They think concern for anything - decorum, legality, welfare of other - that is not in direct service of private interest is fundamentally socialist.
They think concern for anything - decorum, legality, welfare of other - that is not in direct service of private interest is fundamentally socialist.