You would be surprised at how far £100k a year goes, or not as the case may be.
If you earn £100k a year you pay about £50k in tax & National Insurance - leaving £50k a year
If you live in the South east, the average 3 bed house is £300k - mortgage ( interest only) is about £1500 a month/ £17k a year on a house that price. Council tax, £150 per mont/£1700 a year. Gas & electric, £200 per month/ £2400 a year. If you travel into London for work (which is likely) that's £10k a year. That £31k gone before you've bought food (approx £500 a month if you have kids) - £6k gone. Plus your workplace lunches - in London £5 a day/£25 a week/£100 a month/ £1200 a year!. Pension contributions - 10% of your gross salary - £10k.
So, you're left with less than £2k disposable income for the year.
Now ask yourself if you think not seeing your kids because you work all the hours god sends in your £100k a year job is worth that!
Are they better off than most? Yup, most definitely. Are they wealthy! Nope!