[schwinn140]

How do you think a UX person knows what works? It's not that they were born jedi's worthy of understanding good design and human intuition. They test, test, test, and you know what...they tested more.

Tracking what button or page layout works better from a conversion perspective is not a privacy issue. It's a user experience benefit.

Having a SaaS business and not understanding the exact user funnel, conversion, abandonment, etc. will directly translate into a loss of your job and/or the failure of your business.

This isn't about personal preference which you have every right to. This is about building a business, which is why we're all here, and understanding how to successfully delight our customers.