These were MEN. We should be able to decide on our own what exactly is better for our country today without worrying what some guys thought was right that long ago.
I guess I could respond more intelligently if I understood where you're headed with this line of thought. What are you suggesting? That we trash the Bill of Rights?
The rule of law is what makes civilization above the level of mud huts possible and as such, the Constitution is the highest law of the land.
But as I've told my liberal friends for years, we have mechanisms in place to change even that. It's not easy and rightly so.
If you disagree with the Second Amendment, than start your own little movement to get it changed.