In around 2003, when I was 4 years old (it was after July 25th, when RSE released in Europe), my brothers all liked Pokemon as well. One of them, can't remember which, had Pokemon Ruby, and they let me play it with the promise that I wouldn't save over their progress. I didn't, I just ran around battling and catching Pokemon. I remember specifically that they were on Route 120, and their first Pokemon in their party was a Swellow. I didn't know about switching Pokemon or anything like that, I just fought Pokemon after Pokemon until Swellow died, and I was completely mesmerised. After that, I would play their Pokemon Ruby whenever I had the chance, and I've been playing ever since, having played every Generation after and both before.