The Dem House majority, and the even-ish split in the Senate means Dems have enough numbers to obstruct TumTum's dumbshit policies for another 2 years, which was the point of winning congressional control. I really doubt any of the Dems truly wanted to begin impeachment proceedings and all the work that entails, just to get Pence put in the chair.
Earning a 51-49 majority in the Senate would have been nice, but this is enough.