I have never seen an argument that explains how registering firearms prevents the criminal use of that firearm. Nor is registration as useful in the solving of a crimes as TV police shows would make it seem.
While I support background checks, nearly all of the most heinous of mass shootings over the last couple of decades were committed with legally purchased weapons.
If the current solutions touted for gun control worked, Chicago, Baltimore, Detroit, Oakland and DC would be the safest cities in American. Sadly, they aren’t.
And to expand on @Nevada_545 's point… because you can carry a pistol in cars in Florida, a lot get stolen because the owners don’t secure them at service centers, car washes and, the worst, they don’t lock their cars at night sitting in the driveways of their gated communities.