What would make you have more kids?

If you're trying to increase the birth rate (and increase sg work productivity) then have young man start work earlier (accumulate more savings, buy a house earlier to settle down). I recall my fresh grad male friends struggling to pay for dates. Perhaps NS can be partially served during school holidays, so they can start full time work earlier. Thereby lengthening their period of full time salary, gain more full time work experience, be more productive and stay more competitive in comparison to foreigners of the same age. If given a choice, would you hire a 24 year old programmer from India with 3 years of programming experience or a 24 year old Singaporean with 1 year of the same experience? Who would have more "youth energy" plus "experience" to grind through heavy load projects?