I'm a firm believer of the spherical earth. Actually,  scientifically if the earth were to be flat we would actually fall off the earth when we get to its end. 'Its end' because if we assume that something is flat it should have a beginning and an ending so, humans as well as objects will literally fall off the surface of the earth. Also where would one assume that molten magma inside volcanoes come from if the earth were to be flat.