That being said you're engaging in all manner of motivated reasoning to get around basic theories of value and clinging to this notion that if you could somehow get a flawless copy of a thing someone is selling that is in all other ways equivalent to the original that you haven't committed a crime, and while technically true, it utterly obliterates the notion of intellectual property. Now, IP law as it exists has many problems and pitfalls that require reform, however you are seemingly arguing that the theory of intellectual property is invalid, which is quite an interesting viewpoint for someone who apparently earns their living writing software.
In so far as the following assumptions are true:
- The world in which you live requires that you earn a living to subsist yourself - The world in which you live desires intellectual creations that can be copied harmlessly (movies, software, art, music, basically all entertainment products, design blueprints, et al) - Reality consists of a finite amount of time, of which a given individual receives a certain amount, and during which said individual must balance activities that generate income to cover the cost of assumption 1 - The reliable way for an individual to satisfy assumptions 1 and 3 is to dedicate a certain amount of time to the creation of products that can be sold
While you taking a copy of something that you never intended to buy doesn't technically cost an author a sale that would, by your statement, never occur, it nevertheless means that you now possess their creation that was made with their energy, skills, and time which are individually all expressions of their finite time on the planet, assumption 3. That is, no matter how you want to excuse it, unethical. Energy is conserved, matter is conserved, theft of someone else's time and effort to produce a thing you wanted is theft.