And a woman died in a restaurant near here because a brick from the building above landed on her head. True story by the way that was awful...her husband was in front of her...o_O But I totally understand your point. It's better to have one but I don't think it's essential. I've been snowboarding for 15 years and I never had a helmet. Snowboard equipment is not cheap and if you can afford it go for it but I don't think you shoud wait to have one to hit the slopes.
$50 for a helmet. Not sure what a replacement head costs but it has to be at least a couple of hundred!?
They are worth every penny. You just never know what might happen.
So many runs so little time.