Hi guys, just thought I would add my experience of this topic:
In 2001 (age 30 PPL holder) I explained to my wife my 2-year plan to become an Airline pilot.As expected, she agreed and we sold our house to finance the modular training, however with Sept 11th and with numerous other un-planned and unforseen circumstances the 2-year plan became a 5-year plan!!
My wife to her credit was always very supportive and I am currently an F/O flying a Boeing and am loving it, wish I did it years ago, but it's never to late