How would either of us know that? We can only speculate based on existing knowledge of existing facts, and fact is that Trump had already put a withdrawal in motion and had even publically promised to withdraw beforehand.
Or would you expect President Donald Trump to break his promises?
If you can't derive an opinion from looking at facts, then I guess we are done. What is there to debate? The facts? I hope we don't disagree on any of those!
As far as I can tell, you put great value on a promise Trump made that he wasn't able to keep, but don't put any value on a promise the Taliban made and deliberately broke.
You seem also not to place much weight on the facts of 85 million dollars of military equipment given to the Taliban or the 13 U.S. service members who died trying to save people that Biden straight up left behind.
And when asked to make the most pertinent relevant comparison between Biden and Trump (Biden withdrew, Trump did not), you throw up your hands because who can say? Then point your finger at the orange man in accusatory fashion.
C'est la vie.
What good would it have done to maintain a presence in Afghanistan?
I think that's evident from the difference between before Biden withdrew and after he withdrew. For starters, the 85 million dollars of military equipment and the geopolitical power structures of the region with China and Russia both backing the Taliban. The loss of face of the U.S. with it's allies. The question of the condition of the people of Afghanistan among other things. And, of course, the relative safety of the U.S. from terrorist attacks.
On the other hand, the U.S. really did not want to be there.