I agree with you that some take it to an obsession. In fact the way some on various forums are infatuated by the practice I often wonder whether they should be allowed to own weapons at all.
That said I do usually carry. Why? Well, given the number of firearms I own I would be really pissed and mortified if the one-in-a-million need for a gun arose and all I had was an empty pocket. If I have to go without I do, but prefer to carry.