Yet your argument is: It’s wrong because it would be against the law (“theft”)
No, your assumption is apparently that the word “theft” has an inextricably law-based definition. It doesn’t—stealing’s immoral, that’s all there is to it.
it’s not theft to take back something that belongs to you.
Agreed, but irrelevant, as you’re talking about taking, not taking back. It doesn’t belong to you just because you decided it does.





This is what you’ve arbitrarily decided is the case, though, not the reality.