#3 He is loyal to the WWE
As stated earlier in this article, it's clear that John Cena has other commitments. But despite the fact that he is now appearing in movies, commercials and TV shows, he has still showcased his loyalty to the WWE multiple times.
WWE management was clearly worried about the fact that Raw and Smackdown weren't living up to the WWE Universe's expectations, which is why The McMahon Family had immediately announced that they would bring change to the WWE in an attempt to give the people what they wanted.
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Even though Cena wasn't appearing on television, he still returned to appear on Raw and Smackdown which really does prove how much he cares about the company. Whenever the WWE has needed him in cases of emergency, Cena has always stepped up to help out when required.