I know where you're coming from, but that depends on how you ride the street to a large extent. The 'TGS' style riding is like this, and I find it boring on the most part, however I love riding street as it lets you be more creative with your riding. Yeah so it may not be so challenging as natural in general, but there's enough variation out there to make it harder for yourself, and you can link things together to add an extra element to your riding. Sums it up a bit I suppose, though in other ways doesn't. You've got to open your mind a lot more in creative street riding, whereas a lot of the time when riding natural you're confined to using certain methods/techniques to overcome part of a section. I'm not saying you can't be creative on natural, just that it's harder I personally very rarely go near natural, purely because street is a lot more accessible to me, but when I do get to ride it, I love it. Maybe it's because I take some of my street influences with me, and use some non-standard 'natural' techniques, maybe it's because I'm too crap to 'do it right', all I know is that if you open up your mind a bit, and just focus on enjoying yourself, rather than pushing for an extra inch (or whatever else turns you on) then it doesn't matter what you're riding, it's all good