Anodising only affects the very surface layer of the aluminium - about 0.1mm (4 thou). It doesn't seem to make it any harder to bend - and the anodising doesn't seem to crack when the aluminium is bent.
There is a separate process called 'hard anodising', which can only be a sort of browny grey colour, that is a lot harder than normal anodising, but it's still only a very thin layer.
The only downside of anodising is that any marks that you do get will be pretty much impossible to repair or cover up.
This is unless you start cheating - making black anodised aluminium boat masts, we were plagued by tiny little handling scratches that showed up. We used to deal with them with 'instant anodiser'. Now, to an amateur, that would look like a black felt-tip marker - of course, that was just a handy case in which to keep our trade-secret instant anodiser....... Honest.