Because it doesn't have a chance of passing, in either the House or the Senate, or being ratified by the states, and only deflects attention from doing work that CAN be done.
In the first place, abortion was a state issue until the SCOTUS legislated from the bench. Not through the laws of the 'several states', not through the legislative process. It was by fiat.
Now, if RvW is overturned, a process in itself, then it will go back to the states, NOT the Federal legislature. Trying to do both is admirable, but Federalism is about not interfering with what should be a states rights issue.
the HLA is the flag of the pro-life movement. it keeps focus on the issue at a national level.
I am really trying to follow you here, but not sure really where you are headed. No work can be done until the SCOTUS changes and who knows when that will be. That is, if I am following you and you are considering the SCOTUS sending abortion back to the states as "work that can be done"? Let's be honest here an amendment doesn't deflect attention from anything. There is nothing right now from which to deflect attention. A three or four pronged attack puts this issue at the forefront and puts it into the national conscience. I am not so sure an amendment would do so poorly as you think. Battles are won and lost everyday, but you have to fight the battles, win or lose, if you have any intention of winning the war. You hit them high and low and then in the middle. You fight them everyday, anyway you can. You make the opposition weary and tired of the fight. Remember they are fighting for the right to murder the unborn. Ours is the more noble cause of ending this inherent evil. I rather think our side will turn out in force on this issue. I find it hard to believe the other side will be able to get voters enthusiastic about murdering the unborn and be able to marhsal the forces they will need.