I have 2 nerfed decks and i dont really like my vamps deck, should i restart ?
No. Just spend more gems (purchase packs with real $$ if necessary). Konami will be happy, you will be happy. Everyone wins
I recommend you to stick with your current account. Don't let the cards that you currently have go to waste. Grinding can take months but you will reach there eventually.
Of course you can start a new account but I recommend you keep your current one. Maybe your nerfed decks can be viable again in the future. :)
Well, if you don't mind grinding all the way and missing out on all gifts you've received so far... yeah, you can reset your account.
But if you already have most of the hard-to-get spells and traps used in other decks, don't reset your account and just farm gems to get a new deck.
yes you should reset your deck.
cos if you dont like your deck you have less fun.