Hmm what to say.
First up I'll admit I spend a lot of time digging jumps around this time of year. Been doing it for about 10 years. Its a different sport to mountain biking, its like I do 2 or 3 different sports, but all on two wheels
Started jumping on my xc bike and now have two dedicated jump bikes, a bmx and a 24" bike for rougher mtb style jumps.
I still love to get into the hills and do a 30 mile ride as well. Its all riding
For me the thing that bugs me is that people get conned into buying very specific equipment from the outset. Everyone I know started off on their regular bikes and if they enjoyed it as they progressed they bought stronger parts etc, now people seem to turn up on 2k jump bikes without the first clue of how to use them, and they don't need them for the size of jump they start off on.
People don't seem to realise that a normal xc bike is actually quite capable of taken a bit of abuse, as proven BITD when one bike was used for everything.
Here endeth the rant.