Yes... right now, you're right. Most people do flock to vb and such... but remember, these products have been around for much longer than threads, and threads is new and has been essentially re-written from the ground up to provide the best performance.
vbulletin has been just hacked and added features upon the already messy code.. sure, it has a lot of crap in it, but most of it people either don't use, or it just causes the software to be a bit slower. How long have we been hearing about vb 3.0? Over a year? Longer? If you look at the current beta, it is essentially basic VB with some minor enhancements, but mostly just the implimentation of hacks that people created to make it even more bulky.
As Josh stated, wait until 6.4, the software will be taking a huge leap forward as far as features and such are concerned, and it will begin to really take shape. Given the time to grow, it will start to really take off.
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