The promotion of custodial services distracts from Bitcoin's main ideal, which is financial autonomy. If we relinquish control of our keys to third parties, we run the risk of violating the principle of "not your keys, not your Bitcoin". This opens the door for unwanted freezing or confiscation of funds, which centralized financial systems enable. Bitcoin was designed to eliminate these very control points and give each individual complete control over their finances. Custodial services can thus be seen as a regression to old financial systems, which Bitcoin actually wanted to overcome.