Proper engineering requires observing and working with real-world constraints. Ignoring constraints is a form of magical thinking.

One real-world constraint is that end-users won't always do what you intend for them to with the thing you engineered.

“Communism is a good political theory, it’s just hard to prevent people from abusing it.”

“Letting everyone out of prison is a good social strategy, it’s just hard to prevent people from abusing it.”

“Making all shops operate on the honor system is a good business strategy, it’s just hard to prevent people from abusing it.”