I am a fan of many cards, and dislike many for their nasty effects
I love the Melodius, Gravekeepers, Elemental/Masked Heroes, Yubels, Lunalights, The Magicians (Generation 1 specifically, Dark Magician, Girl, Silent, etc), Signer Dragons ( Mostly Stardust and Black Rose ) Petit Dragon for its cuteness, Marshmallow for stalling, Slifer, Uria, many more but I'm behind on what cards are out and forget a lot.
Cards I dislike, Maiden with Eyes of Blue, (My friend used it for his dragon deck and abused its effect believing it to be immune facedown to battle, which it isn't), them Bloody Kaiju because of their effects and the way they can get summoned by taking your monsters as tribute fodder, I don't think I have a problem with any others.
I just love to duel and would duel regardless if I had a chance at victory or not because I love seeing new cards and strategies.