You should have a spam filter. I should have a spam filter. We, the collective we, should not. A ton of things should be done to prevent spam - a vast majority

You should have a spam filter. I should have a spam filter. We, the collective we, should not. A ton of things should be done to prevent spam - a vast majority of spam is also fraud, and should be tackled that way much quicker than it is. The delegation to the government (or large enterprises) to "fix the spam problem" has resulted in our current state of innundation.