It’s often said Sags are tactless and irresponsible. All signs have weaknesses. At least Sagittarius has tons of qualities (way more than the rest of the signs):
S for social
A for adventurous
G for generous
I for idealistic
T for talkative
T for tireless
A for altruistic
R for reflective
I for inquisitive
U for unapologetic
S for straightforward