We're discussing salary of software engineers, firstly because this is HN, and secondly because software engineer salaries in the US are an outlier. Also as I mentioned in my original comment, the figures I gave don't include our pensions at all (as an aside, 55 is the earliest you can currently take anything from private penions in the UK), so I think the comparison is valid enough.
If my wife also had a job as a salaried software engineer, instead of working on our business, our combined income would likely be around €105k, which is still more than enough to be able to live very well and save a lot of money at the same time, as long as you are financially savvy.