According to Osho, it feels difficult and frightening to show your feelings and be yourself because millennia of religious and social conditioning have trained you to repress, imitate saints, and distrust your own nature. This indoctrination breeds self-rejection, hypocrisy, and a split personality that is rewarded by society; thus authenticity seems risky while conformity appears safe, profitable, and 'virtuous'.
You were taught for ages to hide your real feelings and copy others, so being real now feels scary.