For all the same reasons I described, it's versatile, sleek, easy to use, and I can build quick surveys. I don't purchase it, my boss does, so I don't know how much it costs and cannot comment on that.
From my point of view Confirmit has been a key tool in our organization. Without it we can't deliver what we do at this moment. Confirmit has proved that is a reliable, stable and easy to use tool. The few issues we found (as far as I know) were sent to Confirmit support team and fix them. Patching the product has been done faster and without large downtime of the product.
The major factor would be the license cost along with the client requirement for creating new surveys. Using the market research automation tool such as Confirmit would definitely save lots of time and money w.r.t. hiring senior resources. However, it would be great if the new features and patches could be distributed to the existing customers.
Only real reason we will be renewing Confirmit is because we have one complex survey that I have not been able to replicate in any other system. Otherwise, we would save a lot of money by switching over to Vovici or Qualtrics completely. If money were not an issue, we would probably program everything in Confirmit.
Because unless something else came on the market before we needed to renew that was better and more cost efficient there is nearly no chance of not renewing. We need the software and it gets the job done well.