I was up there last time I was in Canada. I took my boyfriend there, because he loves heights (he doesn’t) and it was a good touristy Toronto thing to do.
I recently heard about an Edge Walk being introduced and I’m kinda intrigued. I don’t know if I could work up the courage to actually do it but maybe. It’s expensive but if you follow this link one of the commenters has a good idea of why they will be charging $175.
I think the most adventurous thing I’ve done is white water rafting so far in terms of adrenaline based activities. What do you think, would you do it?