Your argument raises an interesting question I've been keeping to myself. Let me provide some observations before presenting the question.

When a person uses a gun or explosive to commit a crime, they are realizing their desire to dominate, through fear and power. If someone is trying to rob you, you can intimidate them with a gun to more likely realize your desire to not getting robbed.

When a person uses an opiate (recreationally, as a crime), they are realizing their their desire to check out, through being somewhat incapacitated. Similarly, these drugs can be prescribed by physicians to alleviate medical pain, realizing the patient's desire to be more at ease.

Basic weapons and drugs are a little easier to understand as tools, since neither can function predictively in their basic forms without a human actor. But what about land mines? What about an artificially engineered virus? Probably not even legal to posses in most jurisdictions, since these devices have no human involvement once deployed.

A computer's primary function is to perform human functions autonomously. A computer is, in effect, an amplification of a certain person's or group of persons' thoughts and processes. In that way a computer is fundamentally distinct from other technologies, in the fact that modern computing can be used to do most anything a person can think of, even especially without further intervention. The user can also alter the computer hardware's software instructions to perform a new, completely different function. And then run both functions concurrently. In the same way that a computer can be used to perform many important medical calculations quickly in the right hands, it can also do a significant amount of damage to a person's life in a short amount of time in the wrong hands (think ID fraud, theft, blackmail, etc).

As you said: Guns are regulated. Explosives are regulated. Drugs are regulated. Cars are heavily regulated, and their primary danger is simply speed.

So, my interesting question is: If a computer can be used as a tool to quickly ruin another person's life, why are they not more regulated?

^{Note: I am playing devil's advocate here. I do not support regulating computers as a tool.}