I didn't care about the wall until it became clear that Trump was appealing to the basest hatreds that people hold. Here was a man with absolutely no idea whether a wall would work or not, or be a total waste, and who couldn't care less. He only cared that he could use it to appeal to a bunch of simpletons with deeply held fear and hatred. Remember, this was his same approach to replacing the ACA and how did that end up? "Nobody knew healthcare could be so complicated."
Should the day come a President that can be trusted comes forward and says "hey look, we actually do need a wall," then I may change my mind. Until then, I'll put my trust in better technology at the border, barriers where needed, placing more responsibility on employers to not hire illegals, and the like.
I wonder what Trump Republicans might be willing to negotiate for full wall funding. These are things the left never thinks about. "Oh, they want a wall? Well, maybe I could live with that. Will they trade us something?" No, instead it's never anything but destructive and divisive bullshit.
"NO COMPROMISES WITH NAZIS!!!"
Sure. defund Planned Parenthood, the Department of Education, cut wasteful social programs, university grants, and funding to public radio and television, convert all pensions of government employees to 401ks, eliminate all earmarks, eliminate Saturday mail delivery, make Congressional pay incentive-based, grant the President a line-item veto right, limit all new federal laws to 100 pages in length, establish a flat tax rate, and cut the funding to the UN and countries which aren't our allies.
Those alone would save enough to build a wall to the moon and back.