Gwen pisses me off in every second she spends on screen. Period. I rarely hated a fictional character half as much as I hate her. Unfortunately, she's the Rose of Torchwood, and she gets more an more screen time as the series goes on. And since in CoE she's the only one who remainds, that's it for me. I'll never watch Torchwood again, save the reruns of old episodes.

For me, Torchwood ended at Season 2. Whatever comes afterwards, is something completely different... and of no interest for me.