I always considered the line on normal and nut to be drawn at reason. Do you spend your rent, bill money, money for your kids school supplies, and so on for firearms and firearms related supplies? Or do you spend that money on what it's meant for and use surplus funds for arms? I don't see how what you carry or the act thereof has any bearing on your nuts.
Well own my house so don't have rent, don't have many bills - don't owe on anything, so all we have are taxes, insurance, utilities and food. Kids are all raised so consider all my money as "surplus"! Yeah, I'm still a "gun nut" but love every minute of it!!