I'd guess that 3k of income is at levels of the median or average family, where it actually matters. 40k vs 43k, that extra $3k might buy your family something

I'd guess that 3k of income is at levels of the median or average family, where it actually matters. 40k vs 43k, that extra $3k might buy your family something important. Whereas at competent hackers income levels, I'd bet the marginal contribution of $1k toward children achievement is a lot lower. The difference between 120k and 123k is much less important.