Is there a way to not get free MRE's all the time? I just think it makes the game a little too easy

Then don't use it, sell it and buy another food or throw it into a composter bucket

Just sell it back, free money

You have plenty of options, as others have already mentioned.
If you really don't want anything out of it, just dig a hole and bury them. Your very own personal daily task. :)