A law that does not command a majority of the country, and the Congress, is probably a bad law and we should not pass it. The Senate requirement for a 60 vote majority to pass most laws is a good idea. It will prevent a lot of bad laws from getting passed.
For instance, most voters in all states like the idea of voter ID, with a picture ID. Voter ID laws make it harder for out of state shills bussed in just for the election to effect the out come. The Democrats are trying to override state laws requiring a picture ID with a federal law outlawing voter ID and they want to eliminate the filibuster in the Senate to allow them to pass this controversial and bad law with just 50 senators and the vice president’s vote. Bad idea in my book.