In that case, why do they need to be kept at home if they are a hobby? Its not like a bike that would be really difficult to go on a killing spree with!!!
The 2 guns guy, while I think is daft to own any, doesn’t say ‘excessive’ to me, but 30-40 does.
The whole system needs to be looked at. If Americans can’t possibly live without a gun, as is their right with the constitution as it is, then there should be limits on what type and how many can be owned (or at least kept elsewhere than in a secure licensed property like a gun range)