Dude, why you don’t test UX?

I noticed that many companies have no UX designers and products are just created by developers without any clear idea of how it should look, how it should work and what is the purpose of product or feature. I want to remind that quality is not only accurate numbers in tables or correctly filled forms. Quality is also overall look and feel of the product, so QA should work on bringing the best user experience (as it gets), no matter how complex and deep the product is.