Everyone should want analytics. Better numbers can mean less work, or more focused work. You can prioritize improvement of features people use the most, drop ones that nobody cares about, or decide you're in a good place to spend less time on features and more time working off technical debt.
No way. I absolutely want to know how my users are interacting with my sites and site speed is definitely one of the analytic numbers that I look at whenever new builds go out. We test this stuff of course, but dealing with prod loads and usage patterns (how do you know what they are without analytics?) is not something that it is feasible for us to do.
