I personally hope the democrats do impeach Trump, for two reasons:
(1) it’ll tie Congress up in knots and they’ll get nothing done, and at the end of it they’ll look as stupid as the republicans did when they tried the same stupid shit with Clinton, and
(2) unless they can come up with absolutely undeniable proof of a real crime, like video of Trump shooting people on Fifth Avenue, the Senate will never vote to convict.
The democrats will simply blow whatever political capital they have, and become the best argument for electing republicans in 2020.