The wall is just bait for simple minded Joe six pack nationalists.
If there was nothing that these illegal aliens (or legal visa aliens) could obtain in our land, they would just stop coming. It's so simple. The whole thing is a distraction from the real issue. It's literally a big show put on by both sides to keep us occupied on bullshit. Our government has failed and does not represent us, the people of America.
Why is it a distraction? There are issues that are as important, maybe even more important, but that doesn't mean that everything else is a distraction. Priorities matter, but it's generally a good idea to focus on the things you are most passionate about and where you do the best job.
Clearly you didn't read anything. The real issue is the free shit and advantages that both illegal and legal immigrants are given. This is the "big door" in the wall. If these things were cut off it would solve most of the problems that a wall will not. The wall is just symbolic bait.
You sound like a disconnected idealistic idiot. Practical solutions to a problem will solve it. Passion alone answers no need and will accomplish nothing.