You are putting words in peoples mouths, nobody who has spent 10 minutes looking at the border security issue believes it's a "one and done" expense.
Let's talk though about the massive expense to the taxpayers that illegal immigrants already cost. Lowest income households (<$35,000 annual income which is the overwhelming majority of illegal immigrants from southern border) are by far the largest drain on public resources and taxpayer dollars.
So sure, let's balk at spending a few billion a year on border security and instead spend 10X that much on entitlements, incarceration (majority of federal detainees are illegal aliens many behind bars for violent offenses), etc.
You sure are good at poking holes in solutions that have been demonstrated to work without offering any meaningful solution. Letting illegal immigrants with tenuous (90% ultimate rejection rate) claims of asylum live in the US for years draining resources is not a solution.
"The wall is only .11% of the budget." Did I make that quote up? The fact is the wall would cost tens of billions to build and billions and billions more to maintain every year, not to mention the fact that it would require eminent domain acquisitions, that it would disrupt wildlife, and that it simply would not work. It's simply a feel-good symbol to make conservatives feel something.