Lyric discussion by cregitarian 

Cover art for Crowd Surf off a Cliff lyrics by Emily Haines & the Soft Skeleton

It's about the opportunity cost of a relationship, rather than the successful musical career she has. In this song, she pretty much states that she'd be willing to give up her career if it meant having love, or "Rather give the world away than wake up lonely". She sort of swings back and forth, though, and realizes there's no way she can have both. Long distance relationships don't work. In an interview, Haines said this:

“It seems sometimes so discouraging, like it will never work in any situation. [Long distance relationships] don’t work and it also doesn’t work to have a relationship with someone who’s also a musician, ‘cause you’re too wrapped up in each other’s shit and you never get out of it.”

The title is somewhat explanatory. It eludes to her career and the fact that she almost wishes it would end. I don't personally see any truth to the "kids" thing, but I'm not going to shoot it down. Really great song, by the by. I really love this album, and this song especially.