I like doing the same, but you're less likely to be successful if you insult them constantly. I think de-conversion increases it's probability when you truly expose the logic of theism V. atheism and show how atheists are correct. Personally, I've de-converted a few people using rational argument, but I avoided insults because I know it makes people less likely to pay attention or appreciate my attempt. This is just a piece of advice according to my experiences, if your only purpose is bashing and insulting, then go ahead. It can be fun.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you
