Because Congress sets its own salary. I don't. So, I have no say in the matter.

Also because there's no real "cost savings" in a material sense. Congressional spending has been decoupled from federal taxation since the Great Depression. Pay congressmen $1/term. Pay them $1M/hr. I don't see any kind of change in my material condition.

Incidentally, the Gingrich Era Contract with America was billed as a legislation package to rein in the capacity for Congresscritters to personally enrich and profiteer off their positions. Similarly, Pelosi's For The People Act included a number of reforms intended to prevent Congress from double-dealing and insider trading. Despite both Speakers enjoying a bicameral majority and a friendly President during their careers, neither successfully advanced legislation to handcuff members of Congress.

Asking Congress to regulate itself is a fool's request.