one 22lr rifle for small game
one .308 rifle for large game
one 20 gauge rifle for bird hunting
one 9mm pistol for my self defense
one 22lr pistol for wife self defense
one air rifle for target practice and fun
one 5.56 AR-15 for my home defense
one 22lr AR-15 for wife home defense
each gun has a specific purpose. there is no such thing as one gun for all things.

like i said go back to school and learn something!