Well, If I came off as a douche, it wasn't intentional (my bad) but I still stand with everything I said earlier. Perhaps throwing a raw FB (especially since it has a relatively short recharge time) is boring to you and I get it! I mean, you land some really good combos and you know deep down, you deserve to win cuz you had a great round and then BOOM! Fatal Blow!!! Your opponent has a chance of winning despite you being the better player that round! It's frustrating but it's a mechanic for both players.
EVERYONE has been a victim of Fatal blows taking a round from them, but we have also taken rounds from opponents thanks to our fatal blows! We can all agree that a fighting game doesn't rely on your skill alone but other factors like reading your opponent and simply put, MIND games. The opponent just made a good read in a boring fashion OR he/she was lucky! Either way, both scenarios happen in fighting games!
If anything, adjust your fighting style when your opponent's fatal blow is ready! A comeback is a comeback! No matter how boring it is!