Well there is not doubt that VB has some powers that KiX does not. If you notice there are some UDF scripts that call to the WSH object to do the task. VBscript also has regex engine for better data parsing.

However in many cases it can take anywhere from an additional line of code to dozens of lines of code more to complete the same task in VBscript that KiX can do via a macro or small piece of code.

As Kent says, there are no known virus/worms/tojans directed at KiXtart (mainly because there is no file assoication for auto launching KiXtart as there is with VBscript/WSH)

This Website alone is better then ANY other resource I'm currently aware of to help you complete a scripting task. There are plenty of VB sites, but none that I've found are as quickly responded to. So if you didn't know how to do something in VB you may or may not get an answer the same day from other sites. Rarely do you ever go more then a couple hours here on Korg before someone responds with information or code on how to complete your task. That alone is well worth working with KiXtart.

Also as previously mentioned it is a much easier language to pick up and learn then VBscript. So if you move on and someone with little or no experience comes along in your place, they will be up and running much sooner then they would be if everything was written in VBscript. ie. They could learn KiXtart and be productive faster then they would with VB.