Walk into a convenience store and take 5 or 6 candy bars without paying. If you like any of them, come back and give the clerk a couple of buck to show what a good guy you are. After all, you'll "save tons of money", so it must not be stealing. See how that works for you...
Your analogy is invalid. To make it valid, you'd have to compare it with cloning a candy bar, taste it, then pay money to the producer if you liked it enough to finish it.
This is why copyright infringement is unequal to theft.