Not if we are persistent. There are other ways besides an impeachment conviction to hold Trump accountable and to address the underlying problems that allowed him to abuse power.
One would be a censure of Trump with real legislative teeth behind it, perhaps in conjunction with section 3 of the 14th Amendment (which would prevent him from running for office again). This would only require the 5-6 Republicans who are willing to convict regarding impeachment to vote to censure Trump in a serious, meaningful way.
This strategy is actually politically possible and I am continually updating it as events evolve in The War After the Election [https://medium.com/illumination-curated/the-war-after-the-election-545de96aa4ca?source=friends_link&sk=627c55d616d9296af3e398f1686493a4] and a short six paragraph link at the end of it which explains the very targeted, but critical legislation that could be attached to a censure.