If it brings you lot in the USA back together I’m all for it......
Why will not convicting Trump of impeachment heal the nation?
If Trump had resigned, like Nixon, you could argue that there is benefit in no impeachment or the issuing of a pardon. That is not the case here.
Post presidency, irrespective of the result of the Senate trial, what do you think Trump is likely to do?
a) continue his lie that the election was stolen from him
b) admit that Biden won a fair and free election
Nobody, even you, believes option b so you have to assess what will be the best way to reduce the damage of option a.
And a bipartisan (which it has to be in Senate given the numbers) condemnation of his actions has a small chance of persuading some of his voters that Biden is the legitimate president. Otherwise a lack of conviction just adds weight to Trump’s lie which will further damage the nation, especially as he will likely run on that platform for 2024