Your tone is kind of ridiculous.
It’s insane this has to be pointed out to you but here we go.
Hammers are the best, they can drive nails, break down walls and serve as a weapon. From now on the military will, plumber to paratrooper, use nothing but hammers because their combined experience of using hammers will enable us to make better hammers for them to do their tasks with.
No, a tank is obviously better at all those things. They should clearly be used by everyone, including the paratrooper. Never mind the extra fuel costs or weight, all that matters is that it gets the job done best.