You will under-recognize chores your spouse does.

The chore is only visible to you if the trigger for the chore is visible.

E.g. dirty dishes on the counter, or trash bins not out on the curb for pick up.

You don't think about chores for their own sake; they are merely a means to an end.

No trigger, no thought.

When your partner does the chore, the trigger is gone.

There's now nothing to trigger you thinking about it.

Which means you won't think about it to thank them or recognize them for doing it.

In contrast, the chores you do will be hyper visible to you.

The result is you'll think you're doing more chores than your partner, and resent could creep in.

This is a built-in dynamic that can cause friction if you don't acknowledge it and grab it by the horns.