The alternatives are hardly better. In addition to worse penetration performance, the tungsten alloy alternatives for APFSDS rounds are not good for the body either, particularly if being breathed in as fine dust.
If you have kids playing on recently destroyed armored vehicles, there will be an incredible collection of toxic materials present. Uranium oxides from DU (which, to be clear, are primarily toxic as heavy metals, not from their low radioactivity) are really the least of your worries when compared to all of the other breathable particulates that will be present (e.g. asbestos, all of the toxic plastic combustion products, explosive residues).
If you have kids playing on recently destroyed armored vehicles, there will be an incredible collection of toxic materials present. Uranium oxides from DU (which, to be clear, are primarily toxic as heavy metals, not from their low radioactivity) are really the least of your worries when compared to all of the other breathable particulates that will be present (e.g. asbestos, all of the toxic plastic combustion products, explosive residues).