Education sure ticket to good jobs?

For those whom we discuss education recently, one main objective of education is to secure future employment.
Possible rebuttals to this, i.e. education is no guarantee of securing a job in the future:
- discrimination (caste system, women, old, handicapped, LGBT, ex-convict, etc)
- guanxi, connections,
- skills learned do not match requirements of industry (economy undergone restructuring)
- not everyone excel in academic performance
- luck?
- govt must grow economy to create jobs (see HERE); this may not happen if govt is incompetent or if there's a recession

Sample Qn:
The main objective of education should be to enable people to gain employment. Do you agree?