Internalized misogyny makes them think men lead more enjoyable lives in general, grass is greener, etc etc, they almost always detrans or suicide after they realize they're basically invisible to women and treated like a threat by society unless they're in the top percentile of attractiveness and income.
Men do the same shit when they want to slut themselves out and become transwomen, they think women lead more enjoyable lives, not realizing all their societal value dissipates by age 35 and hinges on having a uterus.