I used my Master Ball to catch Suicune in Crystal. :') I mean, I guess it could have been worse, but after countless 'battles' with Entei and Raikou, I was getting pretty tired of their **** and assumed Suicune was like that too, so I just instantly threw my Master Ball when I encountered it. Felt pretty accomplished and didn't find out until much later that Suicune won't even flee from the final encounter.
And like a lot of others here, I was also pretty guilty of just overlevelling my starter and crushing everything with it regardless of type.