I went straight from 64 to Brawl, not even knowing about Melee. Now, I used ness in 64 and told myself that I'd just use Lucas in Brawl until I unlocked Ness, then i'd use him. It didn't take me long to unlock ness and play as him...
And I HATED him. His PKT2 was reduced in length, he had no scream on his bat, the crowd didn't cheer when he magneted something... in my mind as a casual player, I was going 'what have they DONE to him!?!??"
So I completely dropped Ness and reasoned that Lucas was more like what I was used to, more like 'the original ness'. I went exclusively Lucas. It was around this time that i finally got around to playing Earthbound, btw.
I came on to the boards after a match with a kirby main that my brother and i couldn't beat at first but adapted to later on. We wanted to know what won, versatility or specialization. I joined the boards and gradually picked up Ness, very slowly, almost dropping him again a few times, then suddenly found one day that I loved him as a character. he was awesome, 'how could I have not loved him before!?' Ever since then, my usage of ness increased dramatically until he became what i now consider to be either an incredibly close secondary or even a co-main.
That's how I became interested in Ness. I'm so glad it worked out that way, i'm really happy I use Ness. <3