It's not useless - anymore than any other part of the Constitution is useless.
To say it doesn't matter says that the whole system is trivial.
We are not at the wonderful level of equity and enlightenment that you seem to think we are. We need this now - not just for the future.
Truly - I am still baffled why it is opposed. If it takes away special priviledge on either side... yay!
Enshrine equality... and if it did get overturned - at least we would know that during this part of history we were getting better and almost there.