Rogue is a heartbreaking character. Think about it. Because of her powers she can never touch anyone without killing them. Sure, she can have gloves on, but touching someone with gloves on just feels creepy. Like you're a serial killer or something. "Don't want to get any pesky fingerprints anywhere!" When you can't touch anyone, you'd just want to be alone for the rest of your life.
Since she can absorb people's life energy that means she can steal their powers. That makes her an incredibly powerful character in the universe. If I were the X-Men's leader I'd just have her seduce all the bad guys. Once she grabs the willy, it's over. That might not work for someone like Apocalypse though. That dude doesn't look like he's a very sexual person. Dead sexy, but not very sexual.