I think as mtbers we get a lot more used to falling, whethers it's a slow motion tip over into a bush or something a little more intense. You WILL go down. You learn to not be freaked about it most of the time.
I think if you come from a road background, it's more terrifying because you fall less on the road, but when you do, it' usually at high speed and involves major road rash and sliding across asphalt, possibly vehicles.. As a mountain biker, you get used to a)laughing at yourself and b) dusting yourself back off and getting on the bike.
Irulan
2015 Liv Intrigue 2
Pro Mongoose Titanium Singlespeed
2012 Trek Madone 4.6 Compact SRAM