Parties may be drifting toward irrelevance, but partisanship is alive and well.
Trump will not be removed from office unless he looses the support Republicans and that will only happen if they fear losing their seats due to his unpopularity. 

It would be foolish of House Democrats to vote articles of impeachment unless there are 66 votes in the senate to convict. The stakes are high. Trump can do a lot of damage to the country and the world with his little fingers on the nuclear button.