The reason they push for impeachment is to give the appearance that crimes have been committed. They know the media will push the narrative endlessly and it does affect people - they picked up seats in the midterm on the back of the Russian Collusion hoax which has been shown to be untrue. They did it anyway.
This is why a complicit media is such a danger - it allows one party to effectively get ahead by lying and it undermines democracy, but you can only cry wolf or that the sky is falling so many times.
Not being liked by some for his personality or policies is not an impeachable offence so it won't actually happen. Pelosi and most of them know this.
There really needs to be consequences for false accusations, we still need some prison terms for the Russia hoax and we should be talking about impeachment of Obama.