The true reason, is that if you try to divide something by 0 it'll be infinite.
That's obvious from convergence, like
1/0.1 = 10
1/0.01=100
1/0.001 = 1000
so
1/0 = infinity.
That's obvious from convergence, like
1/0.1 = 10
1/0.01=100
1/0.001 = 1000
so
1/0 = infinity.