an 18 year old school leaver could join an accountancy firm and be on £35-50k with no debt by 23, with good prospects for a Corporate Finance/Investment Banking gig (especially if they're an auditor).
= BORING
... or he could aspire to be a pilot.
= EXCITING
Which is why, as they say, there are two types of people in the World: Those who fly aeroplanes - and everyone else ...
(My daughter is a Chartered Accountant by the way and enjoying life in London - and fits the first profile exactly - so I wasn't asked to fork out £100k - good girl ... !!!)
Me, I have a career as a 'Chartered-person' and have flown all my life too. Very bad idea spending all that money on flying training in the end - but I wouldn't have missed it for the World ...
You only live once, so make sure you aren't constrained ... live the dream and then 'retire' to suburbia ...
That's my view ... my life, but it's not for everyone and was certainly NOT what my parents advised ...