What is wrong with a 3 day waiting period on legislation?

Congress moves forward to pass some health care bill, most congressmen and women won't even have read the whole thing (it will be 1000's of pages). So why reject a call for a simple 3 day "wait" before the final vote once a bill is ready to move forward? What do those opposed to 3 simple days have to fear?What is wrong with a 3 day waiting period on legislation?
They do not want the public to have time to read and digest these bills, they know that most of what they put through is pure pork.*What is wrong with a 3 day waiting period on legislation?
Do you think they will really read it just because they have the time to? I don't. I think they are against the wait because A) it takes away the excuse that they didn't have the time to read it(which is BS, because they can delay Bills if they really wanted OR could vote no) B) they want to force things through knowing they won't be read C) figure that it took long enough to get it to vote(you realize how long some bills spend in subcommittees).What is wrong with a 3 day waiting period on legislation?
For all you know it has probably already passed. You must realize, they don't have to tell us.