pull out method

Diana
I hear a lot of crap abt the pull out method and how its not the best and its just useless but my question is why? sure i know theres still a chance of pregnancy but why is there so much crap abt it?
edit: (okay if u havent noticed im a complete virgin so my questions are dumb asf😂) so what do you guys do if you dont use the pull out method? just let him cum in you..?