Jealous of Children??

hi! so, all my life i felt that i've hated children. then, i realized after meeting my girlfriends baby sister, it's that i'm jealous of them. when children would cry in stores and get coddled and babied by their parents, i would be filled with rage but im soon realizing that it's envy. i was never coddled or babied as a child. my girlfriends baby sister enrages me and it's mostly because my girlfriend baby talks her and snuggles her and obviously does baby things with her and i almost want it to be me(?) like i want her to talk and treat me that way. i am an age regressor but it's just such an odd feeling and i hate it. anyone else?