I've done all except hang gliding.
I'm also afraid of heights but I work with parachutes so it's kinda like the ultimate security blanket, trusting the rig I'm wearing.
No need to call extreme sports enthusiasts idiots, to each there own. None of us asking others to do it but we gladly teach you how when you share interest/curiosity. Some us just want to truly live in this short life Gods given us. By far, low altitude BASE jumping is the ultimate rush.