Well, what I was going to say was already said and thx for ya'll
I also may be immature, BUT...let's really take a look at the Kraber...is it really a problem?
First, you don't get the gun automatically. It has to RNG drop and it's late game, so you have to get it often at risk, and you also have to at least survive to get it.
Second, this is a game where everybody goes down before they are killed. In other words, it may one shot down you, but it still doesn't one shot kill you.
Third, it isn't as if the person shooting you didn't have to aim it. They did, and if they hit, it is super wonderful for them. If they miss, however, it is a long reload before another shot. You're going to have to go to your second weapon if you want to shoot again, and at best, I'm going to bet it is an auto rifle, not a long range gun. So...again, high risk, high reward.
These things, as mentioned, exist in all games. I'm still a proponent of more weapons doing way more damage, but even in this bullet sponge game, the Kraber is a pleasant relief from the average water pistol damage of most weapons.
My serious suggestion, OP, is you don't let it bother you. Yes, yes, you know, when you go down from one, it's probably frustrating. At the same time, I'm going to put my money on that it doesn't happen often. Chalk it up to that sometimes an enemy outplays and out gears you both. If you keep playing, you're going to get your turn to Kraber someone else. If you so hate it, you won't use it yourself, still okay. You're going to get your own kills and enjoy those.
Too much salt is bad for your diet.