We spend very little on some things that others spend a lot on such as clothes, beauty treatments, gadgets, home decoration, bought lunches, cars.
We spend a reasonable amount on eating out but a lot of our disposable income goes on holidays (probably about £6-8k a year), which buys 3 weeks in Europe with scuba diving but at cheaper times of year, June, October and either December or February - all outside of school hols.
If you earn decent money and 'don't have any luxuries' you either have high bills (childcare, big mortgage, debts?) or have a skewed idea of what a luxury is and what an essential is. Have you done a proper budget to see how much money you do have spare, cut your bills where you can and checked what you spend your money on day to day? Have a look here:
www.moneysavingexpert.com/family/money-help
We make our money go a lot further than others on similar incomes because I'm always looking for deals, discounts, cashback etc rather than just buying things in the first place I see. That boosts our disposable income quite a bit.