Learn English – Word describing the feeling of being lazy about doing something

The original post itself alludes to two perfectly good adjectives: intuitive and instinctive.

Googling "define intuitive" yields as the primary definition: Using or based on what one feels to be true even without conscious reasoning; instinctive.

"define instinctive": Relating to or prompted by instinct; apparently unconscious or automatic: "an instinctive distaste for conflict."

My sense is that intuitive implies some degree of certainty, even though one might not be able to present logical arguments that would convince someone else--or, at least, without more effort than one wishes to invest. Instinctive, on the other hand, seems to convey less reflection.

One might intuitively select pieces that will coordinate well when decorating a room.

One might instinctively react when one's child starts to walk toward a busy street.

Maybe it could be "likewise". It can be used in many cases, when someone expresses some feeling/opinion, and you want do say that you feel/think the same.

E.g.: A: It was a pleasure talking to you. B: Likewise. (it was a pleasure for me as well)

A: I feel sad for this. B: Likewise. (I feel sad too)

Etc.