If someone actively opposed Hillary first and foremost, why would voting for Trump be a bad idea if they felt that was their best option to ensure that she was not elected?
See preceding posts regarding demanding better. Its about looking to the future, knowing that the present is fated to be fetid, regardless of whether it is a blue or red strain of garbage.
All of which are your personal opinions, which do nothing to invalidate the decisions of everyone who voted for Trump for whatever reason. In fact, it is likely that a large contributing factor in Trump's election was the arrogance of of both liberals and #NeverTrump folks who felt they knew better than anyone else, and like Hillary, felt that anyone who disagreed with them were deplorable, and irredeemable.
This is a state of mind that both Democrats and Republicans (thinking mostly of #NeverTrump folks here) need to eliminate, because if there ever was a failed strategy that absolutely needs to be eliminated, this is the one.
The very fact that Trump won is evidence of the failure inherent with this approach.