Nick Page put together a great short video explaining the reasons he does landscape photography and it is the sole reason any of us should be doing it. Ask yourself the reasons why you do it and see how it matches up with Nick’s reasons.
Sorry for the late reply! =)
I think asking this question of ourselves can elicit all kinds of interesting responses that also then call into question other behavior we engage in in relation to landscape photography… I think it is a great exercise and recommend it for everyone.