He had to raise money and use his retirement money to fund his journey.
What kind of journey is it?
He is travelling the world.
Traveling the world sounds fun but it's unwise to waste retirement money on vacations. Instead of using retirement money he should have saved up for an affordable vacation.
But why shouldn't he do what he wants?
Of course he should do what he wants, but I think it's risky to use retirement money to go on vacation. It may have been better to save up money for a little while, so he can still be secure in his retirement.