Why does ait suck so much 13 bravo?

so im at ft sill and dont worry im still goin back i think itll be a lot better after ait is over with but **** why is it stil like bustin ur barney style the whole time being es and plus why is the pt test standards higher and why o why do they not spend a lot of time teachin us are job i got a combat job the only thing im really good at is shootin my m-16 and breaching houses i wish i did infantry now cuz im to stupid to do anything im not smart at all i barely got in and got a police record out the *** and they still took me i really think im to stupid for the army i dont understand **** besides shooting which im expert and breaching and stuff how do i get by please tips im at ft sill home of artilery pull string go boom get a cookie