The argument that “the government is too strong they’d beat you with your puny guns” is so incredibly short sighted. You’re discounting the power the rifle gives the people not only as a weapon but a symbol of freedom and revolution. An armed society is a deterrent at the very least.
Mozambique’s flag has an AK47 on it for a reason.
I am in the process of doing so now, as it happens — leaving the UK because of the Investigatory Powers Act, because the Home Secretary wants to ban unbreakable encryption without understanding it, and because Brexit removes one of the major obligations to follow international human rights laws which would allow me to sue the government to fix that law.
I’d rather pick my battles and live somewhere new, than die an unknown and unnamed victim of a remote death machine.