Both 19, we would have gotten married right out of HS if they let us, but finally realized going to separate colleges was dumb and did it anyhow. They reconciled when the grandkids started coming regularly. 40 years and we just renewed our contract.
There is a certain kind of couple, mature, sure of themselves, very much in love, but realistic about life, marriage, family, motivated, with shared solid Christian values and hard-working who should marry young and just get started with the business of living. They are fewer and far between in this current culture of artificially prolonging adolescence into the late 20s.
Finances are NOT an impediment to marriage or child bearing, that also is a false cultural idea. You have to work separately, why not work together and build together.