Unfortunately, lead is also very useful to key aspects of industrial civilization, as evidenced by this lengthy Wikipedia list: in plumbing, batteries, bullets and shot, weights, solders, pewters, fusible alloys, white paints, leaded gasoline, and radiation shielding.
Thankfully, as a never-ending game of regulatory whack-a-mole, Western governments have tried to identify and ban many sources of lead exposure. Some regulatory efforts have been highly effective, such as in the case of banning leaded gasoline. However, there are still many vectors for the toxin to leach into the human environment, most especially in the United States. The tragic Flint water crisis for example, has gathered the most headlines recently. Yet according to Reuters, there are over 3,000 other water municipalities in the U.S. with lead exposure measured to be far higher than Flint.