That much? Its not a great salary for a reasonably successful business owner employing multiple staff IMO (I know plenty of professionals on not far off that sum too).
I live in an area of the South East (not of my choosing, if I could pick the business up and move it I would) where a rabbit hutch costs £400-500k. If you don't get housing benefit here, you either pay extortionate rent costs (which I am very sympathetic to), or have big mortgages, unless mum and dad gifted you a load of cash. I have a mortgage of £2500/month on a property which most would consider a fairly modest detached family home, certainly I grew up in a bigger one with a father as an insurance broker. Knock off all other bills/costs, and the tax you pay on that salary, I don't see oddles of money sloshing about to manage this obscene wealth..
Sure, we're comfortable as a 1 earner household but we are not living the high life, and the demands are high. You pay the bills, go on a couple of holidays a year, cover the mortgage, support the family, upgrade the car every few years, and that is it. This great misconception that £100k means stinking rich is absurd. If you take that as paye, as many earners do, you will take home £5500 a month. Typically to earn these incomes, where the demands are high, you work all hours so at least IME of knowing people at this level, its unusual for a household to have 2 full time earners, given one will certianly not be there to change nappies, do the weekly shop and will be working late nights and weekends. Yet, according to a lot in our country, apparently we're sipping champagne every night, and eating caviar, so much money we don't know what to do with it. Funny, you don't see many of these people either when up at 4am going into work.