#3. His Age and Health:
Whether he admits it or not, Conor McGregor is not getting any younger. He is far from the skinny youngster to first step into UFC and has become one of the top fighters of the promotion.
But now, he has all the money in the world, and the only thing that keeps him coming back to the company is his own love for the fight.
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If he could make a move to WWE, then he would be able to continue to perform in front of large audiences, while still not risking his own health at the same level that he was forced to risk it thus far. This would prove to be a huge improvement for the MMA fighter, as he could earn money at high levels, with a part-time contract like Brock Lesnar.