I spent many £1000s of pounds on flight training and time on studying for ATPL exams. Then I came accross unpleasant CAA examiner in my IR and that made my aviation experience worse. I neglected friends, family etc. during my training and the only job offer I got was from Ryanair (pay-to-work scheme).
Re-focused my career now on engineering job (have BEng degree) what I origianlly trained for. Making more money than most of the captains, enjoying time with family and friends and dont miss aviation at all (purely because it is so so expensive).
Would I do it again?
Yes if I was a rich man with loads of money and could write off £100000. Otherwise, I would stay grounded and keep away from flight schools marketing campaigns and instead of spending all my money on aviation, i'd spend it on friends, family, girls, cars, motorbikes, boats and still manage to save some too.