1) Her Legacy
At the end of the day, if Rousey doesn’t care about money, doesn’t care about her health, doesn’t care about beating a dead horse, and doesn’t care about beating up Michelle Rodriguez, she has to care about her legacy.
Because no matter how rich (McGregor), poor (Ken Shamrock), popular (Sage Northcutt), or uncontrollable a fighter becomes (Jason “Mayhem” Miller), they can always fall back on the accomplishments they created inside of the cage. Hardcore fans understand these achievements, and sometimes only look at them as a means for judging a fighter’s career.
In Rousey’s case, despite getting obliterated by Holm back in November, her legendary status remains untainted. We still appreciate her effort to bring women’s MMA to the forefront of the biggest promotion in the world and the fact that she made it look easy.
If she comes back and is unable to regain that dominance, her everlasting glow with diminish by the performance (or lack thereof). It’s often better to stay away and keep what you have than to build on something that is already concrete.