How specifically do you think the average Spaniard benefited by the crown building a colony? Do you think the crown then went and splurged on their farmers, reducing their taxes or something? Because no, that didn't happen.

The benefits for this was entirely with the aristocracy and wealthy, not with the average Spaniards.

Going by some of the statements in this thread, if Spain-after-colonialism becomes richer and more developed, such that the average citizen's standard of living increases, then colonialism benefitted the average citizen. Benefit to the colonized peoples aside, surely many other people benefitted, even if they weren't immensely enriched.