YOU SAID:

Bob is cranky, mostly because of the disability of growing older, thinner, and wiser

INTO JAPANESE

ボブはぎくしゃくしていますが、これは主に年をとった、薄く、そして賢く成長することが不可能なため

BACK INTO ENGLISH

Bob is jerky, but this is mainly because it is old, thin and it is impossible to grow wisely

INTO JAPANESE

ボブはぎくしゃくしていますが、これは主にそれが古く、薄く、賢く成長することは不可能であるためです

BACK INTO ENGLISH

Bob is jerky, but this is mainly because it is old and thin, it is impossible to grow wisely

INTO JAPANESE

ボブはぎくしゃくしていますが、これは主にそれが古くて薄いので、それは賢い成長することは不可能です

BACK INTO ENGLISH

Bob is jerky, but this is mainly because it is old and thin, it is impossible to grow wisely