Were all of the Founding Fathers rich?

Some of the delegates were well off, even considered wealthy. But remember, these same men were willing to sacrifice both their lives and their fortunes for freedom from the tyranny of the King. These same men were Americans. These same men were patriots who believed in limited government of the people and by the people. Some of these same men were not taught in fancy European schools. They were either self taught or served apprenticeships.

As for their supposed wealth? Eight of these men suffered financial problems after the Constitution was written and ended up either in bankruptcy.

Were The Founding Fathers Rich

Majority of wars fought for money - but majority of cannon fodder in wars fought for the wealthy elite come from the rest of us. Make wealthy elite causing wars do their own fighting.

A good deal of them were what modern conservatives would ignorantly call east-coast elites (i.e. most of them were highly educated, which implies they had the money to become so.)

Yes, a lot of them owned plantations, and most of them owned slaves.