If you also agree that an animals suffering should be avoided rather than encouraged, consider what steps you can take.
Because we are sometimes discussing heated topics with people who we've went round and round with and deep down we know we're not going to change their opinion, so we get frustrated.
Most of us don't just do it randomly, notice that I've never cursed at you for example. Oh that brings up another point. MOST of my cursing, and I admit I have a foul mouth, or in this case foul fingers LOL, is not directed at anyone in particular.
This isn't to deny that I to sometimes get carried away; just stating that sometimes when you're arguing with a person who calls names and curses at you on a regular basis it's easy to respond with an "oh yeah motherfucker."
Again, I'm not making excuses.