Shymer said:
@Lyx. Well ouch. You got me at the end there. Thanks for playing. *8)
To be fair, i skipped over a true issue, that indeed borders on ontological: The concept of "purpose". People tend to think, that purpose is an integral part of the tool. It isn't. It's simply "a desired way, what something is to be used for", or at most "a task for which a tool has been optimized". Neither of both excludes using it for something else. And something may be optimized for more than one task - intentionally or unintentionally.
So, someone finding a sword, may indeed come to the conclusion, that it's "purpose" is something entirely different, simply because coincidentally, it's also efficient for some other task, and "killing beings" is not something of much relevance to that persons life.
So, you could indeed argue, that the concept of purpose - or at least how it is popularily understood - is highly misleading and indeed much more multi-facetted. Or to phrase it less accurately: Since tools usually can be used for more than one task, purpose indeed leaves much room for "taste/opinion".