If you are suggesting that each side is just acting like petulant children, that would mean that they didn't have valid reasons for their unhappiness. That would mean that Obama was a great prez, and Repubs were just being childish. Same with Dems and Trump - that he really wasn't a bad prez, just Dems being children.
And what actual quid pro quo are you talking about? I know of none. However, if Biden makes an actual quid pro quo with taxpayer money, which might be impeachable but I know of no illegality, there is not one chance in a billion that a Democrat led House would even think about any impeachment, let alone start an inquiry. On the other hand a Republican led House, unfortunately following the terrible precedent set by Pelosi, Schiff and Nadler, would impeach Biden for going to bed too early.
What illegality do you suppose Biden committed that would warrant any DOJ investigation or prosecution. AFAIK being a corrupt VP and doing deals with foreign governments that enhances his family's wealth or even threatens some kind of shakedown with taxpayer money for personal favor does not break any federal law. Am I missing something?