Vegito > Fucked around to initiate a master plan, only to fuck that up too.
They didn't screw it up. Buu destroyed the world, not their fault. They were successful in freeing Piccolo and their children.
Goku > Didn't finish off Fat Buu as SSJ3.
At the point of Toriyama's writing, Goku couldn't. It wasn't until later that he retconned and said Goku could.
No careful planning, no guerrilla tactics, they came to the battlefield as martial artists, not warriors. Future Sagas they acted differently
Not really, and the guerrilla tactics wouldn't have worked.
Saiyan racism, much?
Please be kidding.
You are making Vegeta and Nappa sound like mindless killing machines like Kid Buu, who is one of the only villains in the series that couldn't be reasoned with.
They are on Earth to 1 - get the DBs by any means necessary, and 2 - They want to kill everyone in order to sell the planet. So no, they can't be reasoned with, they aren't using reason, they are using force.
it is in your best interest to attempt a solution that doesn't involve fighting first if you have leverage.
One, they know it won't work, they have no leverage, there's nothing to gain. They have the DB's, but no way to guaranteeing that they won't lose their life once the Saiyans get what they want. Force is the only thing that will work against them. You have an incredibly naïve view of diplomacy. It only works when the two parties have similar goals. And lastly, Vegeta remembers the DBs on Namek. If Piccolo dies, they go to the source. The Z Team has zero leverage.
They aren't specifically there for revenge or to conquer earth. They just really wanted immortality to beat Freeza.
They do want to destroy everyone and make a healthy profit.
Krillin and Gohan found a way to make a temporary alliance with Vegeta not a few months later, and outsmart him out of his wish at the last minute -- *that* is smart.
Completely different circumstances. It was a temporary way to keep themselves from dying. Who is the Vegeta in this temporary alliance that you imagine? It's not Vegeta, he wouldn't work together with the Z Team at this point. He's the one with the power.
That is where the stupidity lies.
This is so wrong. Not knowing how things would/could turn out doesn't make them stupid. They can't see the future and you are basing your views on information that the Z Team didn't have. How the hell could they know Vegeta would turn "good"? And Vegeta only adapted on Earth when he wasn't the strongest and there was someone there to stop him.
The biggest truths aren't original. The truth is ketchup. It's Jim Belushi. Its job isn't to blow our minds. It's to be within reach.
"You miss 100% of the shots you don't take - Wayne Gretzky" - Michael Scott
Happiness is climate, not weather.