Lightning strikes, the Romans believed, were acts of god performed by Jupiter. If something got hit by a lightning bolt, it wasn’t bad luck. Jupiter just really hated it. Whether it was a tree or a person, Jupiter had decided it was time for it to go.
If it was your friend who got hit, you were legally forbidden to lift the body above the knees, and you definitely couldn’t bury his body. If you did, you’d stolen a sacrifice from Jupiter.