I really wish that RDJ had used a stuntman. He is the lead actor and the last thing this movie needs is for him to break a leg and delay this entire movie for several months. That's what the stuntmen are there for, doing things that might be dangerous.
Now that this has happened, hopefully they'll be much more reluctant to let him to risk himself like that.
Wow. No offense but that sounds like you're his mom or something
"Oh why didn't he wear his protective pads? He'll scrape his knee on that cold driveway"