Why do men like weak women?

What did you mean by "weak"?  There's someone for everybody, different strokes for different folks. Perhaps you are thinking about men who like to control and dominate. Or, who may feel better about themselves, if they can protect, defend, and take care of someone else. Who knows?!

Because they view us as easy targets for sex that we won't complain

REAL MEN do NOT like weak women. Males who do like weak women are called "boys."

Again, CJ, you mean SOME men. SOME men like weak women because being with weak women makes them feel less weak themselves.