Is Nitrous worth it on an auto??

i hear nitrous is better an SAFER with an automatic! reasons for both, the engine does the shifting for you. you could get a ZEX but damn!!! they're a lot of money! i would/am going with a Nitrous Express Stage 1 Kit. works with an all stock motor, but if running 75 shot i would suggest getting some engine work done. first get a CAI, headers, exhaust, it will let your engine breathe a lot easier while working harder than it should. then get a new fuel rail, fuel pump, spark plugs this will almost guarantee that your engine wont "blow up" and will let you go a lot longer before signs of wear start showing.