Honestly, it's about as irritating as defining gay people purely by their sexuality. Just like being gay is only a part of a person - in this case, a gay one - Peter's ability to absorb the powers of others is only a part of him. It's not the fraking impetus of the whole freaking show. Yet, while it's not the impetus, screwing with his powers so frequently as a plot device is as annoying as those who suggest to their gay coworkers, 'well, why don't you try switching teams, even if it's just once?' Let people be who they are as they face the challenges that come their way, please.
Just give Peter and Hiro back their fraking powers and *get on with the story.* Part of this new volume has been awesome, the anti 24, but it's really a TV first for me: I'm simultaneously exceptionally interested, yet in half the scenes (every scene with Hiro and Peter), I feel like someone's scratching a chalkboard with their finger nails. It's grating and repulsive. It's killing Heroes for me.
To put this all in perspective, I'm about to drop Heroes from my Facebook favorites - and, as we all know, nothing's official until it happens on Facebook. So, NBC, if you don't fix this volume fast, prepare for a broken heart on my newsfeed. I'm soooo going to quit you. Consider this fair warning.