Developing WPF software without MVVM

Question

We want to start develop an intermediate desktop software. We decided to use the WPF. We don\'t want to use the MVVM pattern. Because we are not familiar with MVVM, and als

Answer 1

You surely do not have to rely on MVVM when using WPF/Silverlight.

As for the performance difference - it could depend on the style of your coding, however if done properly, the difference should not be noticeable.