Most "classic" games aren't very good. Games don't age well, in fact, games age terribly compared to other mediums. Keep in mind that nostalgia can be detrimental to gaming, its the reason awful games like Duke Nukem Forever sell well. The community needs people like you and me who aren't stuck in the past and actually look for improvement and change. So it's not a bad thing for you to challenge so-called "classics". Mostly, gamers love them because they bring back memories of childhood, not because they hold up well in modern gaming.
That said, I don't have much of an opinion on Ocarina of Time personally, im a PC gamer at heart so I haven't had much of a chance to know enough about Zelda as a series. I played Ocarina of Time on an emulator about 4 or 5 years ago and mostly all I remember is I got bored quickly, but I was young and my tastes have changed since then so I don't pass judgement on it.
The only Zelda game I have an opinion on is Wind Waker, played it through recently (also on an emulator) and enjoyed it quite a bit until near the end when it got repetitive.