70-200 f2.8 or f4 for landscapes

Hi, I don't really see a reason for me to get the 2.8 version of the 70-200 as I mainly shoot landscapes in smaller apertures. And if I do portraiture, I prefer my 50 and just shoot for creative purposes. So if there is a reason for me please enlighten me. Thanks. via /r/photography http://ift.tt/2hURJQ5