This question already has an answer here:
I am wondering why after Smeagol first saw the ring, without even touching it, he was immediately prepared to kill his friend to get it. Bilbo had the ring for many years and yet he was willing to give it up after some minor persuasion from Gandalf. I just thought there might be an explanation written somewhere that I haven't seen.
This question is not a duplicate. This question is predicated on 'first contact' with the ring, not the effects after 'longstanding possession' of it that the other question is asking. We can see that Aragorn and Faramir, both mortals, resisted the 'call' of the Ring and wouldn't take it, much less by force even when they easily could have. Yet others are so enthralled without ever touching it that they would kill their own mother to possess it.