Guys , I started commercial training at 34 and instruct full time now. I too had a very successful career and gave it all up a couple of years ago for the love of aviation.
Money isn't everything , something that I only discovered after leaving the stress behind.
A guy my Dad knows was offered Heli training in the 80's for free but kept in his 'safe' financial advisers job. He has regretted every day since , in his words.