is it weird that me and my husband just never fight?

not weird at all, honestly. what you're describing, disagreeing but talking it through and actually moving on, that IS conflict resolution working the way it's supposed to. fighting isn't the goal, resolving stuff is, and it sounds like you two just skip the yelling part and go straight to the useful part. some couples genuinely communicate well enough that it doesn't need to escalate. your sister's not wrong that avoidance is a real thing though, so it's worth a gentle gut check: when you disagree, does one of you go quiet to keep the peace, or do you both actually say what you think and feel heard after? do hard topics ever get raised at all, money, family, sex, the big stuff? if yes, and you both feel like you can bring things up without it being a whole ordeal, you're not avoiding anything, you're just good at this. trust what you're actually experiencing over what's supposedly normal.

okay but this is genuinely great news, don't let your sister talk you out of it lol. the goal was never "fighting," the goal was always "working stuff out" — you just skipped a step that a lot of couples get stuck on. that's not avoidance, that's efficiency. real avoidance looks different though: things pile up quietly, someone goes numb or checked out during disagreements, resentment leaks into snarky comments, or one of you just folds every time to keep the peace. sounds nothing like what you described. you disagree, you talk, you land somewhere, you move on. that's literally the dream, that's what all the "how to fight fair" advice is trying to get people TO. quick gut check if you want reassurance: after a disagreement do you both feel actually resolved, or just done talking about it? if it's the first one, you're not weird, you're just good at this. enjoy it, don't overthink a good thing into a problem.

Here's another way to look at it: your sister is applying a rule that's true for some couples to your marriage without evidence it applies to you. The real question isn't "do you fight" — it's whether you actually say the hard, awkward, slightly risky things to each other. Do you tell him when he genuinely annoys you? Does he push back when he disagrees, even a little? If yes, and it just resolves quickly because you're both reasonable and communicate well, that's not avoidance, that's just... functional. Avoidance usually leaves residue — a low simmering resentment, topics you both know not to bring up, distance that creeps in. Does that describe you two? If not, I'd gently resist importing her framework onto your marriage. Some couples genuinely aren't wired to escalate. Doesn't mean something's buried, could just mean you're both low-conflict people who married well.