First, uranium isn't added to vaccines. It's naturally occurring everywhere. And thanks to above-ground atom bomb tests, just about everything on the surface of the planet has a slight, unique radioactive signature. But, it's at very low levels. Just like the low level radiation we're all bombarded with from the sun, cosmos, and naturally occurring radioactive isotopes in the earth.
But anti-vaxxers find trace radioactivity in vaccines and claim its doped with Uranium!
The other heavy metals even the CDC admits to. It's on their site. But they're in trace amounts and in compound form (they don't put elemental mercury in vaccines).
Your body is full of heavy metals, such as iron! Zinc is an essential heavy metal, too. You can't eat food without picking up traces of them. Mothers consume heavy metals all the time in their food and their fetuses are built from them and exposed to them thanks to mom's all-natural diet! A born baby is filled with and made-up of that so-called 'garbage' found in vaccines.
And it's not "garbage" at that level of exposure. We're all exposed to toxins at micro-levels. Some of them are essential to remain living even though large doses would kill us (e.g., potassium).
Is it "safer" to never vaccinate? Yes. If and only if there were no diseases that could permanently harm or kill your baby. But since there are diseases that could permanently harm or kill your baby, it should be a no-brainer to opt for vaccination. The only reason the anti-vaxxer movement doesn't look like the anti-intellectual dolts that they are is because vaccines have been successful in stamping out or reducing (in our region of the world) small pox and measles and polio and other diseases responsible for millions of deaths and permanent injuries. If these people lived in the time when one or more of their children would most likely die from these diseases, they'd be begging for the vaccines.