Fate is ・・・?
Key anime is not exactly the most plausible of romantic drama out there, but they're fun shows. They're head and shoulders above most other visual novel/eroge conversion anime, at least part of which is the fault of Kyoto Animation, so you have to give them credit where credit's due.
Oh, and you kind of have to accept that the show started life as a visual novel/eroge and you have to set aside biases before you can enjoy them for what they are. It's a sad thing if you can't, however.