I feel much the same way and it didn't take me a year
It's just a game, I'll play when I feel like it.
Just having fun with my earth deck usually, trying some variations. I bought a rainbow deck after reading the forum, but it won't win me much, even if I beat the FG's a few times. I only have these earth cards and rainbow, can't do much else.
A simple rush deck beats any AI, other than FG, fast enough not to bother with any fancy strategy. I play ai3, top50 and ai5, that's how I gain more electrums and upped cards. I was hoping to create an original deck some time.
It takes long to expand your deck, so this limits what you can do. I have an incredibly high score that means nothing to me and that is only based on lots of wins against the same AI. If there was more reward in pvp.. and maybe a pvp rating? It would bring back the human element in the game. Now it is just like playing a video game.