By that measure, the most lucrative career must be that of the dog owner, they seem to have money to burn😀

I pay way too much tax for the privilege of living in Scotland but in return, my son has benefited from free education to degree level, it’s free for all. It’s early days, he’s yet to realise the potential but at least around here, an engineering degree gets you an interview for some decent jobs, once you’ve made it past that hurdle, a degree and experience should keep you busy for life.