'Let's not give up' always sounds like a good cheer unless the cause sucks or is actually hopeless. I happen to think both are true, sucky and hopeless, but you're making an emotional appeal while using the term 'viable', like 'practical', when I can think of few things further from practical then seizing existing firearms. There are more guns then cars and they're very easily concealed on someone's property even if we were willing to turn out the police and/or military to search everyone's house one by one in detail. There is such a thing as realism, even if I thought we should confiscate all firearms I can barely imagine the sort of manpower we'd need to seize them all or how many billions of dollars would be needed to do a 'buy back' for those willing or how much more for those searches. Prohibitions have not worked very well in this country.