If you have a high salary and live far below your means, then you have substantial savings. Do you disclose your overall assets / amount of savings to the kids? If you have savings and kids do you want to gift the maximum each year, and do you discuss estate planning and such?

I think annual income is just a single metric in a much larger equation which should be discussed by every family. E.g. the realities of what support you might need in the future, or what support you might be able to provide.