25 Years
In the end all we are concerned with is time. Back when I started out as a new pilot it was common to reach a major while still in your 20's. Now 40 years of age is considered to be the norm. Everyday our life force slips from us. If we can't reach our dreams while still young enough to enjoy them then where is the benefit?
Time is a superior capital to all our profits. Aviation increasingly steals the days of our lives in trade for the hollow chamber of the flight deck.
SkyHigh